Option (A) Bacteria is the correct answer.
The coding sequence in the DNA of bacteria is normally continuous; that is, it is not interrupted by non-coding sequences.
How are coding sequences in the DNA of bacteria?The segments in the genome known as non-coding sequences don't encode for any proteins or amino acids.
These sequences either have structurally significant functions in telomeres or satellite DNA, play functional roles in controlling gene expression, or are intervening sequences known as introns.
Although bacteria have non-coding DNA sequences, they are quite a few in comparison to eukaryotic cells.
Non-coding sections make up only 12 percent of the bacterial genome, as opposed to 98 percent in eukaryotes.
The great majority of known bacterial ncRNAs are encoded from intergenic regions, where, like protein-coding genes, their production is regulated by promoter and terminator elements.
Therefore, the coding sequence in the DNA of bacteria is normally continuous; that is, it is not interrupted by non-coding sequences.
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In an experiment, 90 newborn flies are divided evenly into three separate
groups and placed in boxes inside an incubator that is maintained at a
constant temperature of 30°C. On a daily basis, the first group is given water
containing 1 mg/mL of sugar; the second is given water containing 2 mg/mL
of sugar; and the third is given water containing 3 mg/mL of sugar. After four
weeks, the average length of the flies in each group is determined.
Which factor is the dependent variable in this experiment?
A. Average length of flies in a group
B. Concentration of sugar in the water
C. Number of flies in a group
D. Temperature of the incubator
Answer:
A. average length of files in a goup
What layer of blood vessels is responsible for vasodilation and vasoconstriction as a result of sympathetic activation?
Tunica media is the layer of blood vessels responsible for vasodilation and vasoconstriction as a result of sympathetic activation.
What effect does tunica media have on blood pressure?
The cardiovascular system includes tubular organs called blood vessels that move blood across the body. The organ that provides the pressure required to force the blood through the vessels is the heart. In contrast to veins, which carry blood back to the heart, arteries carry blood away from the heart. The vascular wall of arteries and veins has three layers. The innermost layer of the tunic is called the tunica intima, followed by the middle layer, the tunica media, and the outer layer, the tunica adventitia.
Smooth muscle and elastic connective tissue make up the tunica media. When it comes to the upkeep of blood pressure, this layer is the most important of the three. As blood is forced out of the heart, the elastic fibers in this layer can withstand the strain applied to the blood artery. The elastic fibers apply the force back onto the blood when the heart relaxes, keeping blood pressure and flow during diastole.
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The constancy of the chromosome number from one cell generation to the next is maintained through.
The constancy of the chromosome number from one cell generation to the next is maintained through Mitosis.
What is mitosis?A cell prepares for cell division by replicating its chromosomes, segregating them, and creating two identical nuclei during the mitotic phase. The cell's contents are often evenly divided into two daughter cells with identical genomes after mitosis.What is the mitotic process?A eukaryotic cell's nucleus divides in two during the process of mitosis, which is followed by the division of the parent cell into two daughter cells. The term "mitosis," which translates to "threads," refers to the chromosomes' appearance as threads when the cell gets ready to divide.What is the phases of the mitosis?prophaseprometaphasemetaphaseanaphasetelophase, and cytokinesis. What is the importance of mitosis?Multicellular creatures depend on mitosis to produce new cells for growth and to replace damaged or worn-out cells, such as skin cells. Mitosis serves as the main asexual reproductive mechanism for a large number of single-celled organisms.To learn more about mitosis visit:
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What develops from the formation of ossification centers within mesenchymal tissue?
Answer:
Compact and spongy bone
Explanation: Compact and spongy bone develops directly from sheets of mesenchymal (undifferentiated) connective tissue. The flat bones of the face, most of the cranial bones, and the clavicles (collarbones) are formed via intramembranous ossification.
Where efferent motor neurons of the somatic nervous system communicate with their effector organs is called a:______.
Where efferent motor neurons of the somatic nervous system communicate with their effector organs is called a neuromuscular junction.
The nerve fibers that transmit information from the brain to the peripheral nervous system in order to start an action are known as efferent neurons, also referred to as motor neurons. To put it another way, these are the neurons that instruct your body to carry out a task, like removing your hand from a hot skillet. Both skeletal and smooth muscle is controlled by motor neurons' efferent nerve fibers.
The terminal end of a motor nerve and a muscle (skeletal, smooth, or cardiac) form the neuromuscular junction (NMJ), which is a synaptic connection. It is the location where the action potential is sent from the nerve to the muscle. It is also a location for a variety of illnesses and a site of action for a variety of pharmaceuticals. The presynaptic terminal (also known as the efferent neuron), the synaptic cleft, and the postsynaptic membrane make up the architecture of a neuromuscular junction (i.e. the membrane of the muscle cell).
Each muscle fiber has one neuromuscular junction, which is normally found close to the middle of the fiber. As a result, the motor end plate will also be situated close to the muscle fiber's middle.
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Many major publishers generate additional revenue through custom publishing divisions, producing limited-distribution publications, sometimes called?
Many major publishing agencies generate additional revenue through custom publishing divisions, producing limited-distribution publications, sometimes called magalog .
A magalog is a informational copy of a magazine, usually in a 12-page index format. The name is a portmanteau of "magazine" and "catalog" and was coined by Gary Bencivenga. Magalogs help announce magazines to new readers. It can also help current readers see new or upcoming changes, additions, or improvements to the magazine. An alternate use can include catalogs that are presented with content, not just advertising.
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When more water is needed in the bloodstream, the __________ releases antidiuretic hormone.
The pituitary gland releases the antidiuretic hormone when more water is needed in the bloodstream.
Pituitary gland is a pea-sized gland which is located at the base of the brain and is vital for the development, growth as well as the functioning of the endocrine glands of the body.
Whenever, more water is needed in the bloodstream, the pituitary glands releases the antidiuretic hormone or the ADH. This hormone is produced naturally in the hypothalamus and helps in the constriction of the blood vessels and also helps the kidneys to regulate the amount of water as well as salts in the body.
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Some citizens are concerned about the use of genetically modified plants because they:_____.
Some citizens are concerned about the use of genetically modified plants because they cause allergic problems.
Genetic engineering is a specific form of gene technology that modifies the genetic code of living things like plants, animals, and microorganisms. The potential for adverse consequences on the human body posed by GM foods is the biggest danger. It is thought that eating these genetically modified crops can lead to the emergence of illnesses resistant to antibiotic treatment.
The transmission of antibiotic resistance, toxicity, and allergenicity are the three main health impacts of GM foods that raise the most concern. When blown into a natural setting, pollen from a genetically modified crop that carries a pesticide may kill nontarget creatures. Genetically engineered crop pollen can contaminate non-genetically modified crop kinds.
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What should you do if every dilution of your sample results in a plate that is too few to count (tftc)?
When every dilution of your sample results in a plate that is too few to count we should filter the original sample and use most probable number method .
Probable number method count and determine the number of bacteria in a culture, plate aliquots of the dilutions onto agar with sterile pipettes, spread with glass sticks, incubate at 37°C and count the number of colonies. It is imperative that you utilize your best culture technique.
Not all bacterial cells produce colonies, as some bacteria tend to clump or aggregate, and some are nonviable. For this reason results are reported as colony forming units (CFU)/ml of bacterial culture. Ideally only plates with 25-250 colonies are used.
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By what mechanism does pi-3 phosphate promote activation of pkb (protein kinase b)?
[tex]PI3K,[/tex] the mechanism does [tex]pi-3[/tex] phosphate promote activation of pkb .
Normally, the regulatory subunit linked to the active receptor directly stimulates [tex]PI3K[/tex]or is indirectly stimulated by adaptor molecules such as the insulin receptor substrate (IRS) proteins. A RAS protein that binds to GTP can also activate [tex]PI3K[/tex].
A receptor tyrosine kinase (RTK) on the plasma membrane is triggered when an external ligand binds to it, producing receptor dimerization and cross-phosphorylation of tyrosine residues in the intracellular domains. Cell metabolism, growth, proliferation, and survival are all influenced by protein kinase B, also known as Akt. Phosphoinositide-3-kinase is a key player in a multi-step process that regulates its activation.
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Blue jays and crows eat caterpillars and mice. if the number of blue jays increases, what are the two likely effects on other populations?
If the number of blue jays increases, the two likely effects on other populations are both the number of mice and the number of caterpillars will decrease.
What are two likely effects on other populations due to the increment in Blue jays population?An organism that preys on other species in order to consume them as food is referred to as a predator. Prey is a term used to describe an organism that a predator kills. An ecosystem's ability to balance an expanding prey population depends on the interaction between predators and their prey.Blue jays and crows both rely on mice and caterpillars as food sources, as indicated by the current circumstance. Mice, caterpillars, and blue jays are the prey, while crows and crows are the predators. The two prey populations will decline if the number of blue jays rises.Hence, both the number of mice and the number of caterpillars will likely drop as the number of blue jays rises, having two possible implications on other populations.
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In response to a commission by the lincoln center, marsalis wrote blood on the fields in the european tradition of:______.
In response to a commission by the Lincoln center, Marsalis wrote blood on the fields in the European tradition of oratorio.
What Marsalis wrote blood on the fields in the European tradition?Blood on the Fields is a two and a half hour jazz oratorio which was performed by Wynton Marsalis. It was commissioned by Lincoln Center in which it treats the history of slavery and its aftermath in the United States of America. The background of Marsalis prepared him to form a music that drew from a diversity of traditions and styles. Therefore, in response to the Lincoln Center commission, he decided to create a work in the European oratorio tradition.
So we can conclude that In response to a commission by the Lincoln center, Marsalis wrote blood on the fields in the European tradition of oratorio.
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Determine if the following statement is true or false, and why. all mutations are harmful and increase the risk of disease such as cancer.
The given statement is False.
All mutations are not harmful but some can increase the risk of diseases such as cancer.
Are all mutations harmful?A mutation is a change in a gene's structure, which is how inheritance works. DNA, a lengthy molecule made up of nucleotide building pieces, is the substance that makes up genes.While most mutations are benign, some can be detrimental. A dangerous mutation may lead to a cancerous condition or possibly a genetic problem. Chromosome mutations are yet another type of mutation.Mutations may be inherited or picked up during the course of a lifetime.Some mutations are advantageous and raise an organism's chances of thriving and passing on its genes to the following generation.Natural selection will gradually increase the frequency of a mutation when it enhances either survival or reproduction. When mutations are dangerous, they gradually disappear from the population.Hence, not all mutations are harmful only a few can be.
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A failure of the cardiovascular system to keep an adequate supply of blood circulating to the vital organs of the body is known as _____________.
Shock is a condition in which the body's circulatory system fails to maintain a sufficient flow of blood to its important organs.
What is "shock" & how can one identify it?
Shock is a serious medical illness caused by an abrupt decrease in blood flow to the body. Because of inadequate blood flow maintained by the circulatory system, essential organs receive much less oxygen and nutrients. Additionally, it weakens the kidneys, which limits the body's ability to eliminate waste. Numerous factors, such as insufficient blood volume and insufficient cardiac blood flow, can contribute to shock. Shock is characterized by low blood pressure (hypotension), excessive breathing (hyperventilation), a weak, quick pulse, clammy, grayish-blue skin (cyanosis), reduced urine output (oliguria), extreme worry and dread, bewilderment, and occasional hostility.Learn more about shock here:
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explain the national food security of Bhutan based on the concept of photosynthesis?
Food security, as defined by the United Nations' Committee on World Food Security, means that all people, at all times, have physical, social, and economic access to sufficient, safe, and nutritious food that meets their food preferences and dietary needs for an active and healthy life.
What determines the sequence and arrangement of amino acids
in a protein?
Explanation:
Greetings !The sequence of amino acids in a protein and protein function are determined by the genetic code or DNA. The order of deoxyribonucleotide bases in a gene . The basic building blocks of proteins. The sequence of amino acids in a protein and protein function are determined by the genetic code.
The total collection of alleles in a population at any one time makes up that population's?
The total collection of alleles in a population at any one time makes up that population's gene pool.
Gene Pool:A gene pool is a collection of all the genes (including alleles) found in a population or species that is capable of reproduction. A big gene pool has a wide range of genetic diversity and is more resilient to environmental stresses. This could be any population, such as pond frogs, woodland trees, or town residents.
In order to analyze the genetic variation of a population, the gene pool must be identified. A population has a higher likelihood of obtaining features that increase its biological fitness and the chance of survival the more genetically varied it is.
As a single species, humans can interbreed with one another anywhere on Earth. Therefore, each allele of the approximately 19,000–20,000 human genes in our genome makes up the human gene pool.
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The increased concentration of an element in an aquatic organism relative to the water it lives in acquired over its life is called:_______
The increased concentration of an element in an aquatic organism relative to the water it lives in acquired over its life is called bioaccumulation.
When an organism absorbs a material more quickly than it is shed or removed by catabolism and excretion, this is known as bioaccumulation. Therefore, even if environmental levels of the toxin are not extremely high, the danger of chronic poisoning increases with the biological half-life of a toxic chemical.
Bioaccumulation is the process by which DDT builds up in fish bodies once it enters aquatic environments. The concentration of DDT rises with each subsequent trophic level when fish are consumed by higher trophic level animals; this process is known as biomagnification.
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An animal’s chances of surviving poisoning greatly depend on how quickly they get treatment. how can this be a challenge for many pet owners?
The signs of poisoning are comparable to those of other challenges that affect pet owners as survival greatly depend on how quickly the pet get treatment.
More than 90% of animal poisonings are unintentional, acute, and occur on or near the property of the pet's owner. There are an infinite number of agents via which exposed animals may become poisoned, and the majority of the time, the specific agents involved in animal poisonings will depend on what is available in the environments of the animals.
The most frequent substances that expose animals nowadays are rodenticides, chocolate, medications, glycols, metals, pesticides, plants, and other substances, including rodenticides, chocolate (around 25% of exposures), and medications (22% of exposures). Pets' health may also be endangered if they are fed human food.
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An action potential traveling along the entire length of an axon demonstrates ________ propagation.
An action potential traveling along the entire length of an axon demonstrates continuous propagation.
Propagation of action potential:
An action potential is created by the rapid input of Na+ ions and the slightly slower outflow of K+ ions. Action potential initiation occurs in the axon's first segment, and as action potentials spread throughout the axon, cells can convey their output to synapses located further distant from the cell. The action potential conducts continuously in unmyelinated axons, whereas it conducts rapidly and saltatorily in myelinated axons where sodium channels are concentrated near the nodes of Ranvier.The action potential always advances in the same direction whenever a local current begins to form due to the prior axon segment still being in the absolute refractory period. As a result, action potentials travel away from the location of their generation and do not change course.Learn more about the Action potential with the help of the given link:
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Eric has blue eyes. Because the gene for blue eyes is recessive. What must be true of eric regarding this trait?
Answer: He has homozygous
Explanation:
hope this is what you needed.
Which chain of volcanic islands is not part of a convergent/subduction plate boundary?
Hawai'an volcanic islands
Hawai'an volcanic islands is not part of a convergent/subduction plate boundary.
What kind of plate boundary produces a sequence of volcanic islands?convergent boundaryAlong the convergent boundary, the new magma (molten rock) rises and may erupt violently to form volcanoes, frequently creating arcs of islands. Divergent plate boundaries are created when two plates are moving apart.Why do volcanic chains and convergent borders coexist?Subduction causes melting that is partially molten. Water loss in the plate causes partial melting. Mantle material melts as a result and rises to the surface.Which are the 4 types of convergent boundries?Divergent Plate Boundary. Convergent Plate Boundary. Transform Plate Boundary. Hotspot.To learn more about volcanic islands visit:
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The correct sequence of sperm-transporting tubules that transport spermatozoa to the epididymis is the?
Correct sequence of sperm-transporting tubules that transport spermatozoa to the epididymis is Seminiferous Tubules---> Rete Testis---> Vasa Efferentia----> Epididymis
Spermatozoa is the sperm that is formed from a spermatid after Spermiogenesis. It is released into the lumen of seminiferous tubules.
Seminiferous Tubules is present in the testis of human body.
Sperm transporting tubules are:
Seminiferous TubulesRete testisVasa EfferentiaEpididymisThe sperm passes through the seminiferous tubule into Rete testis.
Rete testis is a network of tubules that form a link between seminiferous tubule and Vasa Efferentia.
Vasa Efferentia connects Rete testis to Epididymis. It makes a pathway for the sperm transportation.
Epididymis is the region where the transported sperm from Vasa Efferentia reach. It stores the sperm until they are functionally matured enough to carry out the fertilisation in the human female body.
Hence, the pathway is Seminiferous Tubules---> Rete Testis---> Vasa Efferentia----> Epididymis
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The unique chemical structure of the cell wall of mycobacterium spp. is associated with the presence of:______.
The unique chemical structure of the cell wall of mycobacterium spp. is associated with the presence of N-glycolyl muramic acid and an increase in lipid content.
Mycobacteria have strong, four-layered cell walls that are exceedingly thick. Peptidoglycan makes up the first layer, whereas lipids make up the subsequent layers. In order to maintain appropriate osmotic stability, peptidoglycan performs crucial activities like stiffness and rigidity. Bacteria are resistant to environments that are acidic and alkaline due to the presence of lipids.
All Mycobacterium species can be identified by their thicker cell walls, which are waxy, hydrophobic and abundant in mycolic acids. This is a characteristic that sets them apart from many other bacterial species. The mycolic acids make the mycobacterium less prone to antibiotics. Additionally, these molecules aid the bacteria in tricking the immune system and then hiding from it.
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It is important to maintain septic systems in order to _______. a. prevent treated sewage from contaminating groundwater b. process human waste into fertilizer c. prevent untreated sewage from contaminating groundwater d. none of the above please select the best answer from the choices provided a b c d
Answer:c prevent untreated sewage from contaminating groundwater
Explanation:That would mean the ground water would then be dirty and undrinkable
What is the name of the irreversible inhibitor (drug) used as an example in the lecture?
Diisopropylfluorophosphate (DPF) is the irreversible inhibitor (drug) used as an example in the lecture. the its an enzyme hydrolyses the pheophrous- Florine bond, but the phosphate remains bound to serine in the active site and deactivating it.
Irreversible inhibitor are contently /non contently bound to the specific enzyme and slow down the enzyme. invisible hibitors are 3 types such as group specific reagents , reactive substrate analogs also known as affinity label and inhibitor.
There are some examples of irreversible inhibitors -compound diisopropylphosphofluoridate (DIPF), nerve gases ,acetylcholinesterase ,and preventing transmission of impulse. Penicillin irreversibly inhibits the enzyme transpeptidase by reacting with transpeptidase.
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what can be stated for a particular element if only the group number of 14 is known
A. The element has 14 neutrons
B.the element has 4 valence electrons
C. The element has 4 electrons
D. The element has 14 protons
Answer:
B
Explanation:
Group numbers can be used to figure out valence electrons. From groups 13-18 you subtract 10 from those group numbers to find the valence electrons. So in this case we're dealing with group 14. So 14-10=4. So we have 4 valence electrons.
In the given case, it can be concluded that the element has 4 valence electrons. The correct option is B.
What is an element?A genuine element is defined in chemistry as a material whose atoms all (however almost all) have the same atomic number, or number of protons.
Nuclear scientists, on the other hand, define a pure element as one that has only one stable isotope.
A chemical element is a type of atom with a specific number of protons in its nucleus, which would include the pure substance made up entirely of that species.
Chemical elements, unlike chemical compounds, cannot be broken down into simpler substances by any chemical reaction.
Valence electrons are electrons in an atom's outermost shell, or energy level. In the given case, the element has group number 14 which indicates that this is having 4 valance electrons.
Thus, the correct option is B.
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Given the following diagram, what product is produced at Location A?
This diagram shows various processes and products in the global carbon cycle. Location A shows organisms in the ocean undergoing photosynthesis and respiration.
Public Domain
Carbohydrates
Carbonic acid
Fossil fuels
Limestone
Please help ASAP!! Very confused
The three diagrams or images are pictures of female reproductive plant parts.
What is the first image?
The first diagram is an Ase.xual Spore. An ase.xual spore is Asexual spores can be shed outdoors or within a specific reproductive sac called a sporangium and are genetically identical to their parents.
Inhospitable environmental circumstances frequently lead to se.xual reproduction in fungus. When reproducing sexually, mycelium can either be homothallic or heterothallic.
What is the second image?The second diagram or Item B of the plant is called the Ovule.
What is the Ovule of a plant?Ovules are held or contained in the carpal, the bottom portion of the pistil (eggs). the region of the flower that develops into a fruit after fertilization of the ovarian ovules, or eggs.
In order words, the Ovule is the part of a flowering plant that produces female reproductive cells.
What is the Third Image?The third image is a juxtaposition of subfamilies
Campanuloideae and Lobelioideae.To the left is a cross section of a common ovary in the subfamily of the plant genus called Lobelioideae. It depict 2 locules and numerous axile ovules.
On the right is a common ovary of the Campanuloideae with locules that are five in number and numerous axile ovules. There is also traces of milky sap on the cut surface.
What is a locule?A locule is any of several tiny, distinct chambers, particularly in an ovary.
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The structural layer of the earth that flows because it is hot and under extreme pressure is what?
