Of the options provided, option D is correct. Cleavage division results in a hollow ball of cells called the morula, which is the precursor to the blastula.
During cleavage, the fertilized egg undergoes a series of rapid cell divisions without any increase in the overall size of the embryo. This results in a large number of smaller cells, each containing a smaller amount of cytoplasm than the original egg cell.
As these cells continue to divide, they form a compact ball of cells known as the morula. The cells within the morula then rearrange themselves, forming a hollow ball of cells called the blastula. The blastula contains an inner cell mass that will give rise to the embryo, as well as an outer layer of cells that will form the placenta and other supporting structures.
It is important to note that the other options provided are not accurate statements about human embryonic development. Option A is incorrect because cleavage divisions do not increase the mass of protoplasm, but rather divide the existing mass into smaller cells. Option B is incorrect because both blastomeres typically divide at the same time. Option C is incorrect because as cleavage divisions continue, the resultant blastomeres become smaller, not larger.
Learn more about blastula at : https://brainly.com/question/30630561
#SPJ4
this substance is produced in the liver, but is stored in and secreted by the gallbladder.what it called
Bile is the name of a substance that aids in fat digestion and is created in the liver but stored in the gallbladder.
Function and secretion By dissolving fat molecules into micelles, or smaller droplets, bile aids in the digestion of fats. Digestional enzymes can more easily bind to and catalyze reactions in micelles due to their high surface area (lipase).The liver cells secrete bile, a yellow-green fluid that serves two main purposes: it removes waste and carries cholesterol and bile salts. during digestion, to break down fats.The cholangiocytes that line the bile ducts modify the bile after it is produced by the hepatocytes. Active transport systems within hepatocytes and cholangiocytes as well as a structurally distinct bile canal are necessary for the production and secretion of bile.For more information on bile kindly visit to
https://brainly.com/question/29640000
#SPJ4
Complete each sentence by dragging the labels to the appropriate blanks. Then place each sentence in a logical order beginning with cardiomyocytes in a resting state correct order fast calcium correctoret blocks below into their. With_____ permeability to extracellular calcium, the postive charge enter the cell continues to enter the cell, which prolongs the duration of depolarization
With increased permeability to extracellular calcium, the postive charge enter the cell continues to enter the cell, which prolongs the duration of depolarization
How does calcium behave during depolarization?
Depolarization activates voltage-gated L-type calcium channels, causing calcium to flow into the cytoplasm from the T-tubule system.
The gated sodium ion channels on the neuron's membrane quickly open during the depolarization phase, allowing sodium ions (Na+) from outside the membrane to flood into the cell. The intrinsic charge of the neuron changes from -70 mV to -55 mV when sodium ions rapidly enter the cell.
Membrane repolarization occurs as a result of both quick sodium channel inactivation and a massive outflow of potassium ions caused by activated potassium channels.
learn more about depolarization
https://brainly.com/question/14692094
#SPJ1
Can I have help please
Answer:
Tar - picture N 4
Nicotine - picture N 1
Carbon monoxide - picture N 3
Smoke particles - picture N 2
classify microbes into five groups based on oxygen requirements. which group(s) of microbes have protective enzymes and which group(s) of microbes do not?
Microorganisms can be categorised into the following groups based on their oxygen requirements:
Aerobic, facultative, anaerobic , capnophilic and microaerophilic
Explain the types of microbes (oxygen requirements)?The need for oxygen can be used to categorise different types of microorganisms. The way that bacteria meet their energy needs is reflected in the amount of oxygen they need.
Aerobes thrive in ambient air, that contains a 21% oxygen content and a negligible (0.03%) carbon dioxide content.Because oxygen is poisonous to anaerobes, they cannot develop there. Free O2 is not the final electron acceptor for anaerobes.aerobic (requires O2), facultative (grow in presence/absence of O2), anaerobic (growth in absence of O2), capnophilic (CO2 can stimulates growth), and microaerophilic (needs decreased O2 tension).To know more about the types of microbes, here
https://brainly.com/question/8695285
#SPJ1
What advantage is gained by having so many steps in one signal transduction pathway?
Greater amplification of the signal
Greater size of genome to code for proteins
Increased number of proteins to be synthesized by the cell
Increased time interval between signal and response
The correct answer is option A. The main advantage gained by having so many steps in one signal transduction pathway is greater amplification of the signal.
Greater signal amplification is possible when a signal transduction pathway has numerous stages. As a cell progresses through the many phases of its life cycle, it has the ability to amplify and modify an external signal that it receives, often in the form of a tiny molecule.
Each step might make the signal stronger as it is sent from one molecule to the next. As a result, the cell can recognise even tiny signals and react correctly.
In addition, the pathway's several phases provide the cell with the ability to regulate the signal response and ensure that it is suitable and proportionate to the initial signal. The cell may make sure that it reacts correctly by boosting the signal and managing the response appropriately to any changes in the environment.
Complete Question:
What advantage is gained by having so many steps in one signal transduction pathway?
A. Greater amplification of the signal
B. Greater size of genome to code for proteins
C. Increased number of proteins to be synthesized by the cell
D. Increased time interval between signal and response
To learn more about signal transduction visit:
https://brainly.com/question/20372593
#SPJ4
Arrange the following terms into the order in which a compound must pass through to move from plasma to CSF. Drag and drop options into correct order and submit. For keyboard navigation SHOW MORE O Pericyte O Capillary endothelium O Extracellular matrix O Astrocyte Unanswered.
While glucose, amino acids, and cations are transported via carrier-mediated processes, water, gases, and lipid soluble compounds can freely move from the plasma into the CSF.
Capillary endothelium, Extracellular Matrix, Pericyte, and Astrocyte are the cells that a compound must pass through before it reaches the CSF from the plasma.
The arachnoid granulations absorb the majority of the cerebrospinal fluid (CSF) into the venous system. The protrusions of the arachnoid mater that pierce the dura mater and protrude into the lumina of the dural venous sinuses are known as arachnoid granulations.
Three primary purposes of cerebral spinal fluid include: Trauma protection for the brain and spinal cord.
nourish the tissue of the nervous system.
Clear the cerebral metabolism of waste.
To learn more about CSF click here:
https://brainly.com/question/29117505
#SPJ4
The above question is incomplete. Check complete question below -
Arrange the following terms into the order in which a compound must pass through to move from plasma to CSF. -
Capillary endotheliumBasal LaminaPericyteAstrocytetrue or false The ENERGY STAR program encourages manufacturers to reduce the amount of electricity used by computers and related devices.
The sentence is true. The energy star program pushes manufacturers to lower the electricity consumption of computers and related equipment.
What precisely is electricity?
The motion of charged particles like electrons results in the generation of electricity, a type of energy. It frequently supplies power for electrical equipment such as lamps, computers, televisions, and other gadgets. Electric trains and electric cars are examples of vehicles that can run on electricity. It is utilised in a number of sectors, including healthcare, agriculture, and manufacturing. Many energy sources, including as coal, natural gas, nuclear energy, hydropower, and wind, are used to produce electricity. Modern life is impossible without electricity since it provides the power required for numerous daily tasks.
To learn more about electricity please click on the given link: https://brainly.com/question/24170040
#SPJ4
when a hair cell stereocilia bend away from the kinocilium, a. voltage-gated calcium channels open when the membrane potential of the hair cell increases.b. it does not release neurotransmitters. c. it releases neurotransmitters.d. it generates an action potential to communicate with the auditory nerve.w
when a hair cell stereocilia bend away from the kinocilium it releases neurotransmitters option C.
The cell becomes hyperpolarized when the stereocilia are bent away from the kinocilium, which lowers afferent activity. The stereocilia protrude into the ampullary cupula and the hair cells are located in the crista ampullaris of the semicircular canals. The stereocilia in this instance are all pointed in the same direction.
Tiny hair cells bend when the waves reach their apex, turning the vibrations into electrical messages. Stereocilia are the name for these little hair cells (types of receptors that can detect sound). Electrical impulses are sent from the inner ear to the brain via the auditory nerve.
To learn more about neurotransmitters please visit here:
https://brainly.com/question/28101943
#SPJ4
how do retrotransposons differ from other transposons?
Transposons in DNA are copied and pasted to migrate. While, the Retrotransposons, on the other hand, replicate the element and copy it into a new chromosomal site using an intermediary RNA.
The Retrotransposons multiply more quickly than DNA transposons, as a result.The Retroelements depend on an RNA transcript that is retro transcribed by a reverse transcriptase before incorporation in the genome, as opposed to DNA-transposons, which amplify without an RNA intermediary.Thus, we can see the difference between Retrotransposons as well as the transposons.
To know more about Retrotransposons please check the following link
https://brainly.com/question/30672463
#SPJ4
based on the β-globin alignment, identify the best hypothesis about how humans are related to monkeys and gibbons.
The best explanation for how humans are related to monkeys and gibbons based on the -globin alignment is that gibbons are more closely connected to humans than monkeys since the gibbon -globin sequence matches the human sequence more closely.
The hemoglobin gene genes for a protein component that is necessary for red blood cells to carry oxygen. It is possible to compare the -globin sequences of humans, monkeys, and gibbons to find parallels and differences that reveal their evolutionary links.
In this instance, the percentage of identity between the globin sequences of gibbons and humans is higher than it is between monkeys and humans, indicating that gibbons are more closely related to humans than monkeys are. This is so because two sequences with a higher percent of identity likely share a more recent common ancestor.
The complete question is:-
Based on the β-globin alignment, identify the best hypothesis about how humans are related to monkeys and gibbons.
a. Both monkeys and gibbons are equally related to humans because they both have less than a 10% difference in β-globin sequence with humans
b. Both monkeys and gibbons are equally unrelated to humans because neither monkeys nor gibbons have the exact same β-globin sequence as humans
c. Gibbons are more closely related to humans than monkeys are because the gibbon β-globin sequence is a closer match with the human sequence
d. Monkeys are more closely related to humans than gibbons are because the monkeys' β-globin sequence has the lower percent identity with humans
To learn more about red blood cells, refer:-
https://brainly.com/question/17890844
#SPJ4
when the hisauxotrophic salmonella strain used in the ames test is exposed to a substance x, no his (wild type) revertants are seen. if, however, rat liver supernatant is added to the cells together with substance x, revertants are seen. do you conclude that substance x is a potential mutagen, and even carcinogen, for human cells? yes or no? explain.
Yes, the rat liver supernatant contains enzymes that convert substance X to a mutagen, and his+ revertant occur.
The Ames test is a popular method for detecting if a certain chemical may cause mutations in the test organism's DNA. It is a biological experiment performed to examine chemical compounds' mutagenesis potential.
The Ames test employs different strains of the bacterium Salmonella typhimurium that have mutations in histidine synthase genes. These strains are auxotrophic mutants, which means they need histidine to thrive but can't make it.
The approach assesses the tested substance's potential to induce mutations that result in a return to a "prototrophic" state, allowing the cells to thrive on a histidine-free media.
Larger creatures, such as mammals, contain metabolic mechanisms that might possibly convert a chemical that is not mutagenic into one that is, or a chemical that is mutagenic into one that is not.
To more successfully assess a chemical compound's mutagenicity in relation to bigger species, rat liver enzymes can be introduced in an attempt to reproduce the Ames Test's effect on the substance being studied.
Optionally, rat liver extract is added to replicate the impact of metabolism, as some chemicals, such as benzo[a]pyrene, are not carcinogenic in and of themselves, but their metabolic products are. On an agar plate, the bacteria are distributed with a little quantity of histidine.
This modest quantity of histidine in the growing medium permits the bacteria to thrive and mutate for an initial period of time.
When histidine is reduced, only bacteria that have evolved to make their own histidine will survive. For 48 hours, the dish is incubated. A substance's mutagenicity is proportional to the number of colonies seen.
learn more about Ames test at https://brainly.com/question/13333943
#SPJ4
What is a body cavity that most animals possess?
The main bodily cavity of the majority of animals, the coelom (or celom), is situated inside the body to enclose and protect the digestive system and other internal organs.
What is meant by body cavity?A bodily cavity is an area of the body that is filled with fluid and serves to house and safeguard internal organs. Membranes as well as other structures separate the various bodily cavities in humans. Smaller bodily cavities are divided between these two body cavities.
How many cavities are in the body and which is the largest cavity of human body?The ventral cavity and the dorsal cavity are the two primary cavities. The diaphragm, a dome-shaped respiratory muscle, divides the larger ventral cavity into two portions, the thoracic cavity and the abdominopelvic cavity.
the body's greatest hollow area is the abdominal cavity. The diaphragm, a sheet of muscle and connective tissue that divides it from the chest cavity, forms its upper boundary. Its lower boundary is formed by the pelvic cavity's upper plane.
To know more about Body Cavity visit:
https://brainly.com/question/28775372
#SPJ4
which two of the following statements regarding heterotrophs are true?
-Bacteria are unable to digest lipids to use as carbon sources
-Monosaccharides are generally good carbon sources for heterotrophs
-Large organic molecules (like starch, a polymer or glucose) must be digested before absorption
-Organic carbon originates in minerals found in soil
The two statements which are true about Heterotrophs are as follows:
Monosaccharides are generally good carbon sources for heterotrophs.Large organic molecules (like starch, a polymer, or glucose) must be digested before absorption.Thus, the correct options for this question are B and C.
What do you mean by Heterotrophs?Heterotrophs may be defined as the types of organisms that significantly cannot produce their own food. Instead of this, they take nutrition from other sources of organic carbon, mainly plant or animal matter.
All pathogenic bacteria are heterotrophic. This is because they obtain energy by oxidizing preformed organic molecules (carbohydrates, lipids and proteins) from their environment. Metabolism of these molecules yields ATP as an energy source.
Heterotrophs organisms are unable to synthesize organic materials from inorganic raw materials. Heterotrophs are known as consumers because they consume producers or other consumers. Dogs, birds, fish, and humans are all examples of heterotrophs.
Therefore, the correct options for this question are B and C.
To learn more about Heterotrophs, refer to the link:
https://brainly.com/question/4933024
#SPJ1
based on its ability to use gasoline as an energy source, a particular strain of bacteria could be described as
If a particular strain of bacteria was capable of utilizing gasoline as a source of energy, it might be categorized as a chemoorganotroph.
Chemoorganotrophs are organisms that utilize the electrons in organic materials as fuel and chemical molecules as a source of energy. Hence, the organic component is their source of reducing equivalents. Simply, chemoorganotrophs get their electrons from organic substances. As a result, organic molecules meet their entire energy and carbon needs. They primarily use the chemical bonds in lipids, proteins, and organic substances like sugars as a source of energy (like glucose). Chemoorganotrophs include certain predatory, parasitic, and saprophytic prokaryotes as well as a few heterotrophic protists and mammals. Several archaea also perform chemoorganotrophic functions. Fungi are chemoorganotrophs, which means they use organic carbon as an electron giver and a source of carbon. Chemotrophs, which derive their energy from the oxidation of electron donors in their surroundings, include both chemoorganotrophs and chemolithotrophs.
The complete question is:
Based on its ability to use gasoline as an energy source, a particular strain of bacteria could be described as ______________.
To learn more about the Chemoorganotrophs please click on the given link: https://brainly.com/question/9129832
#SPJ4
Capsules are neutrally charged. This being the case, what is the purpose of emulsifying the sample in serum in this staining procedure
The bacterial samples adhere better to the glass slides when serum is used.
What does emulsifying accomplish?
Emulsification's goal is to stabilize emulsions by stopping the breakdown that results from creaming aggregation and coalescence. Reduced dispersion density, smaller dispersed particle sizes, and oil droplet surface protection are viable solutions for these problems.
The capsule stain's function is to make the bacterial capsule's presence known. By using simple staining techniques or after the Gram stain, it can be difficult to see the water-soluble capsule of some bacterial cells.
To learn more about Gram stain use:
https://brainly.com/question/15089365
#SPJ1
at the molecular level, type a and type b blood differ in which of the dollowing characteristics? choose all that apply
Regulatory capture happens when the businesses that are supposed to be regulated end up having a big say in how the rules are written.
The Digital Services Act is a regulation that will go into force right away across the EU. National human rights groups that uphold the Paris Principles are essential in helping States identify the existence of appropriate laws. Finding a balance is crucial to decide how the competition and regulatory agencies will work during the transition. It describes the steps businesses should take to meet these requirements. While companies are not obligated to follow or adopt any of the specific measures. It describes the steps businesses should take to meet these requirements. The Japanese economy's distinctive traits during the "economic miracle" years included
Learn more about Regulatory agencies here:
https://brainly.com/question/29833412
#SPJ4
What would happen if the inside solution of a cell is isotonic as well as the solution outside of it?
what comb types will appear in the and in the and in what proportions if single-combed birds are crossed with birds of a true-breeding walnut strain?
According to the rule of dominance, the f1 gene will exhibit dominant alleles R and P and genotype RrPp, resulting in 100% walnut comb progenies. When RrPp is self crossed, alleles separate in the 9:3:3:1 ratio.
In its broadest sense, the term "genotype" refers to the genetic makeup of an organism. In other words, it represents the complete set of an organism's genes. More narrowly, the term can be used to refer to alleles or variants of genes carried by an organism.
Each pair of alleles represents a genotype of a particular gene. A genotype is said to be homozygous if it has two identical alleles at a particular locus, and heterozygous if the two alleles are different. Alleles contribute to an organism's phenotype, the appearance of the organism.
According to Mendel's law of dominance, in heterozygotes one trait masks the presence of another for the same trait. Only the dominant allele is expressed instead of both alleles contributing to the phenotype.
The F1 generation is genotypically heterozygous as it carries both dominant and recessive alleles. Co-dominance occurs when both alleles are dominant, as in the AB blood group in humans.
For more information on genotype , visit :
https://brainly.com/question/3187414
#SPJ4
Complete question :
In the fowl, genotype rrpp gives single comb, R-P- walnut comb, rrP- pea comb, and R-pp rose comb. What comb types will appear, and in what proportions, in the F1 and F2 if single-combed birds are crossed with birds of a true-breeding walnut-combed strain?
when phospholipids are placed in water they spontaneously from a bilayer with which of the following
- the polar heads on the surface and the non polar tails in the interior
- the polar heads on the surface and the non polar tails in the exterior
When phospholipids are placed in water they spontaneously form a bilayer with the polar heads on the surface and the nonpolar tails in the interior because fatty acid tails are poorly soluble in water therefore phospholipids at that moment form bilayers in aqueous solutions, Then the hydrophobic tails buried in the interior of the membrane and the polar head groups exposed on both sides.
The arrangement of this lipid bi layer consists of head containing phosphate group, which has a polar character or negative charge, and an area called the tail (the fatty acids), which is neutral. Therefore the head can form hydrogen bonds, but the tail cannot. Therefore the head remains outside forming hydrogen bonds with the water molecules that's why they are called hydrophilic.
On the other hand the tail remains in the interior that's why they are hydrophobic.
For more information on lipid bilayer, visit:
https://brainly.com/question/29023313
#SPJ4
Which of the following terms is used to describe an area of the body that is farther from the median plane?A. ProximalB. LateralC. MedialD. IpsilateralE. Contralateral
B. A region of the body that really is further away from median plane is referred to as lateral.
Distance from the trunk, the site of origin of a portion, or both, is referred to as distal (example, the hand is located at the distal end of the forearm). It is lateral's antithesis. The phrase refers to the general placement of body parts. For instance, the arm is medial to a chest. Looking upward (away from the head or lower section) from the base of a structure Near the surface of the body is referred to be superficial. Deep: Away from the surface of the body. Proximal: A structure's origin is nearer. Distance from the origin that is distal.
Learn more about median
https://brainly.com/question/7302614
#SPJ4
this is the smallest unit of life and can grow, reproduce, and perform certain basic functions. What is it?
The smallest unit of life, cells have the ability to grow, reproduce, and carry out some essential tasks.
Describe a cell.A cell is a primary membrane-bound organism in biology that includes the elements of life and serves as the basis for all other living things. A single cell is sometimes a full organism unto itself, just like in the case of bacteria or yeast. Some cells develop specialised jobs as they grow.
These cells lay the foundation for enormous multicellular organisms like humans and other animals, along with other specialised cells. Cells, although much bigger than atoms, remain quite small. The tiniest known cells are members of the bacterial class known as mycoplasmas.
To learn more about cells visit; https://brainly.com/question/19853211
#SPJ4
Which layer of the skin is composed of stratified squamous epithelium?
The epidermis, which is the outermost layer of the skin, is composed of stratified squamous epithelium.
This layer is primarily responsible for providing a barrier between the external environment and the underlying tissues, and it is also involved in the production of melanin, which helps protect the skin from UV radiation. The epidermis is constantly shedding dead skin cells and producing new ones, which allows for the maintenance and repair of the skin. Beneath the epidermis is the dermis, which contains connective tissue, blood vessels, and nerve endings, among other structures. The epidermis also contains melanocytes, which are responsible for producing the pigment melanin that gives the skin its color and helps protect it from radiation. Additionally, the epidermis contains Langerhans cells, which are a type of immune cell that helps protect against infection and cancer.
Learn more about the epidermis here:
https://brainly.com/question/13450121
#SPJ4
which of the following is a function of telomerase? to protect dna polymerase. to help make okazaki fragments. to proofread during dna replication. to prevent cancer. to overcome telomere shortening.
It stops the shortening of telomeres. Telomerase is crucial for maintaining telomere length since decreased telomerase activity results in shorter telomeres and ageing cells.
The ribonucleo-protein telomerase, also known as terminal transferase, extends the 3' end of telomeres by introducing a species dependent on the telomere repeat sequence. Most eukaryotes which have telomeres, which are segments of repeating sequences, at each end of their to the chromosomes. Telomeres shield that the chromosomal end from DNA-deterioration or fusion with nearby chromosomes. Also, because it lacks the telomerase, the fruit fly which is Drosophila melanogaster depends on retrotransposons to preserve the telomeres.
To learn more about telomerase click on the given link: brainly.com/question/13641132
#SPJ4
The _____ ______ is the ability to reach threshold without stimulation
The pacemaker potential is a type of electrical potential created by cells in the heart and other excitable tissues. It is the electrical signal that initiates an action potential,
A brief electrical signal travels along the cell membrane, triggering cellular activity. The pacemaker potential is generated by a combination of ion channels and voltage-gated ion channels. It is capable of reaching the threshold without stimulation, meaning that it can generate its own electrical signal without any external stimulus. This is due to the concentration gradient of ions across the cell membrane, which creates an electrical potential. The voltage-gated ion channels also help to maintain the pacemaker potential. These channels open and close in response to changes in the membrane potential, allowing ions to flow in and out of the cell and helping to maintain the potential.
To learn more about tissues
brainly.com/question/17664886
#SPJ4
Fill the Blank? food is moved through the gi tract by muscular waves called______
Food is moved through the GI tract by muscular waves called peristalsis.
Peristalsis is a radially symmetrical contraction and relaxation of muscles that travels anterogradely, in the form of a wave down a tube. Peristalsis is a coordinated progression of involuntary circular muscles that contract and relax at the same time in the gut lining. This process is preceded by a simultaneous contraction of the longitudinal muscle and relaxation of the circular muscle.
Most of the smooth muscle tissue in a digestive system, like the human gastrointestinal tract, contracts sequentially to create a peristaltic wave, which drives a ball of food along the tract. Circular smooth muscles relax first, then contract behind the chewed item to prevent it from traveling backward, and finally, longitudinal smooth muscles contract to drive the object forward.
To know more about Peristalsis
brainly.com/question/15265456
#SPJ4
microorganisms require phosphorus, sulfur, iron, and magnesium for metabolism. what specifically are these elements used for in microbial metabolism?
Phosphorus, sulfur, iron, and magnesium are all essential elements required for microbial metabolism.
These elements play key roles in various metabolic processes, allowing microorganisms to grow and reproduce.
Phosphorus is an essential component of nucleic acids, including DNA and RNA, and is also involved in energy transfer processes. Sulfur is an essential component of certain amino acids and cofactors, and plays a role in cellular respiration.
Iron is involved in a number of important metabolic processes, including the transport of oxygen, the generation of ATP, and the detoxification of reactive oxygen species. Magnesium is also required for a variety of metabolic processes, including the regulation of enzyme activity, DNA synthesis, and the utilization of energy from glucose.
These elements are typically obtained from the environment, either by scavenging or by active uptake. Microorganisms have evolved specific mechanisms to acquire and utilize these essential elements, which are critical for their survival and success.
Learn more about metabolism:
brainly.com/question/29763323
#SPJ4
The shape of the lens of the eye is controlled by the _____.(a) pupillary constrictor muscles(b) pupillary dilator muscles(c) ciliary muscles(d) iris(e) All of the above.
The ciliary muscles are in charge of shaping the eye's lens.These ciliary muscles are very important for eyes.
Our eyes lenses must adapt in shape to allow us to focus on objects at various distances.While, the circular ciliary body is moreover an outgrowth of the iris, On the other hand, a colourful portion is often known as eye fluid, is created by the ciliary body. Moreover, it houses the ciliary muscle, which modifies the lens' shape when your eyes focus on a close object.The ciliary body, which is located between the anterior border of the choroid and the eye, is mostly made up of the ciliary muscle. It is made up of smooth muscle fibres that are aligned longitudinally, radially,
To know more about ciliary please check the following link
https://brainly.com/question/29587575
#SPJ4
the question refers to the table, which compares the percent sequence homology of four different parts of a gene (two introns and two exons) that is found in five different eukaryotic species. the data show the percentage of sequence homology of each intron and exon in comparison to the sequences in species a. % sequence homology species intron i exon i intron vi exon v a 100% 100% 100% 100% b 98% 99% 82% 96% c 98% 99% 89% 96% d 99% 99% 92% 97% e 98% 99% 80% 94% based on the data in the table, which phylogenetic tree is the most likely depiction of the evolutionary relationships among these five species?
Compares the percent sequence homology of four different parts of a gene for this the correct option is d which represent the correct sequence of homology.
compares the percent sequence homology of four different parts of a gene (two introns and two exons) that is found in five different eukaryotic species.
Homology is similarity due to shared ancestry between a pair of structures or genes in different taxa.
The homologies definition refers to a similarity in genetics or structure between two species that implies a common ancestor. There are three main categories of homologies: structural, developmental, and molecular.
Eukaryotes are organisms whose cells contain a nucleus and other membrane-bound organelles. There is a wide range of eukaryotic organisms, including all animals, plants, fungi, and protists, as well as most algae.Eukaryotic organisms include protozoans, algae, fungi, plants, and animals. Some eukaryotic cells are independent, single-celled microorganisms, whereas others are part of multicellular organisms.
Learn more about homology here:-
brainly.com/question/29936055
#SPJ4
what is the effect in generael of changing the last base in a codon
The effect in generael of changing the last base in a codon is can change the amino acid that is produced during translation which known as a silent mutation.
Mutations are changes that occur in genetic material, both DNA and RNA, which occur at the gene or chromosome level, which can be passed on from parent to offspring.
Silent mutation is a change in a base pair in the gene at position 3 of the codon which results in a change in one genetic code. In some cases, changing the last base in a codon can lead to a different amino acid being produced, which can affect the structure and function of the protein. This is known as a "missense mutation." It is important to note that not all changes in the last base of a codon will have an effect on the protein, as some codons can code for the same amino acid.
Learn more about silent mutation at:
https://brainly.com/question/30337180
#SPJ11
which of the following is found in gram-positive cell envelopes? group of answer choices lipopolysaccharides outer membrane porins techoic acids
Teichoic acids are found in gram-positive cell envelopes. Option D is correct.
Gram-positive bacteria have a thick peptidoglycan layer in their cell wall, which is anchored to the cell membrane by teichoic acids. Teichoic acids are polymers of glycerol or ribitol and are covalently linked to the peptidoglycan layer. They play a role in maintaining the structure and stability of the cell wall and may also be involved in adhesion to host cells and biofilm formation.
Lipopolysaccharides and outer membrane porins are found in gram-negative bacteria, which have a more complex cell envelope with an outer membrane in addition to the peptidoglycan layer and cell membrane. The outer membrane contains lipopolysaccharides and porins, which play important roles in protecting the cell from environmental stresses and interacting with the host immune system.
To know more about Teichoic acids here
https://brainly.com/question/13340907
#SPJ4
--The given question is incomplete, the complete question is
"Which of the following is found in gram-positive cell envelopes? group of answer choices A) lipopolysaccharides B) outer membrane C) porins D) Teichoic acids"--
