Early cells would benefit from DNA replacing RNA as the information storage molecule because information would be stored in a more stable molecule.
DNA is more stable than RNA because it is double-stranded, whereas RNA is single-stranded. This means that DNA is less prone to mutations and can store information for longer periods of time. Additionally, RNA would be able to serve a more specific role as mRNA, which is responsible for carrying the genetic information from DNA to the ribosomes for protein synthesis.
This would allow for more flexibility in the catalytic functions of RNA. Overall, the replacement of RNA with DNA as the information storage molecule would allow for more efficient and accurate storage and use of genetic information in early cells.
Learn more about cells:
https://brainly.com/question/28615566
#SPJ11
due to its hydrophilic channels, porins allow the passage of group of answer choices small water-soluble nutrients. sugars. amino acids. inorganic ions. all of the above.
Hydrophilic channels the passage of small macromolecules, such as glucose or maltose amongst others.
Porins also possess an internal hydrophilic channel or pore that permits the passage of small macromolecules, such as glucose or maltose amongst others, from the external environment to the cell interior.
Channel proteins can aid in the facilitated diffusion of substances by forming a hydrophilic passage through the plasma membrane through which polar and charged substances can pass.the bilayer has a hydrophobic core that prevents the passage of polar molecules while allowing the relatively free diffusion of non-polar molecules. This is important because it allows the bilayer to select which molecules it will allow into and out of the cell.
The molecules or proteins are considered hydrophilic. These molecules are also referred to as water-loving molecules. There is an association of the proteins with the membrane of the cell. The location of a protein is in the lipid bilayer.
Learn more about hydrophilic here:-
brainly.com/question/29192429
#SPJ4
What muscles are not attach to the bones?
Heart muscles, smooth muscles, and cardiac muscles are not bone-attached. Keep in mind that these muscles are controlled involuntarily. Hollow organs like blood arteries, the digestive system, the bladder, and the uterus can contract because of smooth muscle.
What are muscles do?By pulling on the joints, muscles enable movement. They also assist the body in chewing and making it easier for food to go through the digestive system. Even when we are absolutely still, our muscles are still working in every part of the body. The muscular system, an organ system, is made up of skeletal, smooth, and cardiac muscle. Although some muscles can function entirely independently, the neurological system controls the muscular systems in vertebrates.
Why is muscle important?You can move with ease and keep your muscles strong to keep your body strong. They support your enjoyment of sports, dancing, dog walks, swimming, and other enjoyable activities. Additionally, they assist you with those other (less enjoyable) tasks you have to complete, such as making the bed, cleaning the carpet, or mowing the yard. To be deemed healthy, a lean muscle percentage should be between 70% and 90%. Your body fat percentage so ranges from 10% to 30%. Body fat levels in athletes typically range from 7 to 22%. Men typically have lean mass in the 80–90% range, whereas women typically have lean mass in the 70–85% range.
To know more about Muscles visit
https://brainly.com/question/9883108
#SPJ4
thiobacillus ferrooxidans is a type of bacteria that oxidizes iron compounds for energy and then uses that energy to build carbohydrates. we might best recognize this bacterium as the rust-colored ring that builds up inside toilet bowls. thiobacillus ferrooxidans is an example of a
Thiobacillus ferrooxidans is an example of a chemoheterotroph. Robert Starkey of the American university Rutgers isolated it from a field in the 1930s.
A genus of Gram-negative betaproteobacteria is known as Thiobacillus. The type strain of the genus Thiobacillus thioparus is known as the StarkeyT strain. More than 30 "species" have been identified in this genus since it was founded by Martinus Beijerinck in 1904, with the original strain most likely being what is now known as Halothiobacillus neapolitanus (the first strain was observed by the biological oceanographer Alexander Nathansohn in 1902). However, the vast majority of these names were never formally or profitably published.
The complete question is:
Thiobacillus ferrooxidans is a type of bacteria that oxidizes iron compounds for energy and then uses that energy to build carbohydrates. We might best recognize this bacterium as the rust-colored ring that builds up inside toilet bowls. Thiobacillus ferrooxidans is an example of a
a) photoautotroph
b) chemoheterotroph
c) photoheterotroph
d) chemoautotroph
To learn more about Thiobacillus click on the given link: brainly.com/question/4800395
#SPJ4
The coxal bones unite anteriorly at a joint called thea) pubic symphysis.
b) sacroiliac joint.
c) hip.
d) acetabulum.
e) None of these choices are correct.
d) acetabulum, is the site where the coxal bones unite anteriorly at a joint.
coxal bone is also known by the name of hip bone, which is formed by the fusion of 3 bones - the ilium, ischium, and pubis, joined to form acetabulum.
coxal bone / hip bone is ossified from eight centers.
The two hip bones joining is done at the pubic symphysis and together with the sacrum and coccyx .
location of the types of the bones are the ilium is the largest and most superior part of the bone, the ischium is located postero inferiorly whereas the pubis or pubic bone forms the anterior portion of the hip bone
To know more about coxal bone,
https://brainly.com/question/29526822
#SPJ4
cells in the immune system are sometimes named for their color, or the color they become when stained.
Cells in the immune system are named for their color because they are often identified and studied through a process called staining.
Staining involves treating a sample with a colored dye or antibody that specifically binds to a particular cell type or protein, making it visible under a microscope.
For example, white blood cells, which are a type of immune cell, are often classified into different categories based on their appearance when stained. Neutrophils, for instance, are so named because they have a neutral color when stained with a common laboratory dye. Eosinophils, on the other hand, become red when stained with an acidic dye called eosin. Similarly, basophils appear blue-purple when stained with a basic dye called methylene blue.
Other immune cells, such as T cells and B cells, are not named for their color but rather for their function and/or the location where they were first discovered. Nevertheless, staining remains an important tool for identifying and characterizing different immune cell types, and has helped researchers make significant strides in understanding how the immune system works and how it can be harnessed to treat disease.
Learn more about immune system here:
https://brainly.com/question/19843453
#SPJ4
select the characteristics exhibited by glycocalyx of eukaryotic cells, check all that apply.
-outermost surface cells
-composed of protein
-composed of polysaccharides
-means of adhering to other cells
-means of locomotion
-signal reception
A) Hydrophobic nature: The glycocalyx of eukaryotic cells is composed of polysaccharides and proteins that have hydrophobic properties.
What is hydrophobic ?Hydrophobia is a fear of water. It is a type of specific phobia, which is an irrational fear of a specific object or situation. Hydrophobic reactions are also seen in some chemical compounds, which are repelled by water. These compounds are known as hydrophobic molecules and are a type of amphiphilic molecules which contain both hydrophobic and hydrophilic parts. These molecules form a protective coating when they come into contact with water, which helps them to repel the water and make it difficult for the water to interact with the molecule.
To learn more about hydrophobic
https://brainly.in/question/9431267
#SPJ1
List 2 body processes in which you think energy is lost
Answer:
Thermogenesis: This is the production of heat in the body, which is a byproduct of metabolic processes such as digestion and the conversion of food into energy.
Exhalation: When we breathe out, we lose energy in the form of heat and carbon dioxide. The energy that was used to power our bodies is expelled as heat, and the carbon dioxide produced by cellular respiration is also expelled through exhalation.
ccording to your results from the pulse rate lab, arteries closest to the heart have a greater pulse intensity. why do you think this is?
Arteries closest to the heart have a greater pulse intensity due to the stronger force of blood being pumped by the heart. This results in a stronger pulse wave that can be felt more easily.
The pulse is the rhythmic expansion and contraction of an artery as blood is pumped through it by the heart. The intensity of the pulse can vary depending on factors such as heart rate, blood volume, and the elasticity of the artery walls. The pulse can be felt in different areas of the body, such as the wrist, neck, or ankle, where arteries are located closer to the surface of the skin.
Arteries are blood vessels that carry oxygen-rich blood away from the heart and to the body's tissues. The closer an artery is to the heart, the stronger the force of blood being pumped by the heart. This results in a stronger pulse wave that can be felt more easily.
Learn more about the pulse here:
https://brainly.com/question/30185219
#SPJ4
Which is not part of the fern sporophyte generation?
A. rhizome
B. sorus
C. frond
D. rhizoid
Rhizoid (D) is not the part of the fern sporophyte generation.
Why is it called sporophyte generation?By name, sporophyte means "spores" for "sporo," and "phytate" means "plants." The term "sporophyte" refers to plants that produce spores within other plants. A microscopic structure called a spore aids in the continued germination of a new plant. The only food supply for the sporophyte generation is the photosynthetic gametophyte. In the sporangium of a sporophyte's cells, meiosis creates both male and female spores.
What is sporophyte and gametophyte generation?Spores are created during the asexual phase, also known as the sporophyte generation, whereas gametes, or sex cells, are created during the sexual phase, also known as the gametophyte generation. The gametophyte is diploid (has two sets of chromosomes), whereas the sporophyte is haploid (has one set of chromosomes) (has a double set). Plant generations called sporophytes create spores. Algae, bryophytes, angiosperms, and gymnosperms all produce spores. A spore is a microscopic object that, upon germination, produces a new plant. Mitotic and meiotic spores are the two types of spores that are recognized.
To know more about Sporophyte Generation visit:
https://brainly.com/question/2491016
#SPJ4
The tendons of ____ split to allow for the passage of the ____ tendons to attach to the distal phalanges. Flexor digitorum superficialis ; flexor digitorum ...
To allow the flexor digitorum profundus tendons to join to the distal phalanges, the flexor digitorum superficialis tendons separate. Therefore, the correct answers are flexor digitorum profundus and superficialis.
Long held theories suggest that this is how tendon transfer of force between muscles and between muscles and bone happens. Because of this connection, tendons can passively change forces as they move, increasing stability without making any effort. But during the past 20 years, a lot of research has focused on the elastic properties of specific tendons and their ability to function as springs. Positioning tendons, for example, are used primarily to position limbs, such the fingers when writing, while other tendons act as springs to promote mobility (energy storing tendons).
To learn more about tendon click on the given link: brainly.com/question/3205735
#SPJ4
which of the following components of a nucleotide bond together to form the backbone of a dna molecule? which of the following components of a nucleotide bond together to form the backbone of a dna molecule? nitrogenous base and sugar nitrogenous base and phosphate phosphate and sugar
A sugar-phosphate backbone is created when the 5-carbon sugar and phosphate groups join forces with additional nucleotides.
What is the name of the bond that makes up the nucleic acid backbone?
The nucleic acid strands that make up all of the life that exists on Earth are held together by phosphodiester bonds. When precisely two hydroxyl groups in phosphoric acid combine with hydroxyl groups on other molecules to form ester bonds, the resulting bond is known as a phosphodiester bond.
The DNA double helix is composed of the bases in the centre and the sugar and phosphate group as its backbone. The backbone is held together by a chemical connection between the phosphate group of one nucleotide and the sugar of a nearby nucleotide.
To learn more about DNA use :
https://brainly.com/question/16099437
#SPJ1
True/false? water is the trigger for the embryo to begin the enzymatic breakdown of the starchy endosperm.
It is TRUE that the enzymatic degradation of the starchy endosperm in the embryo is set in motion by water.
The embryo and endosperm, two separate structures, begin to form in angiosperms as a result of a double fertilization event. By providing nutrition, safeguarding the embryo, and regulating embryo growth by functioning as a mechanical barrier throughout seed development and germination, the endosperm plays a crucial part in sustaining embryonic growth.
In the cereal endosperm, there are four primary cell types: the starchy endosperm, the aleurone layer, transfer cells, and the area around the embryo. Cereal grains' starchy endosperm, which provides nutrients for seed germination and seedling establishment, is the main tissue for accumulating seed reserves.
To know more about double fertilization
brainly.com/question/13339822
#SPJ4
why do some species employ both mitosis and meiosis, whereas other species use only mitosis? see concept 13.2 (page) view available hint(s)for part a why do some species employ both mitosis and meiosis, whereas other species use only mitosis? see concept 13.2 (page) they need both if they are producing plant gametes. a single-celled organism only needs mitosis. they need meiosis if the cells are producing organs such as ovaries. they need only meiosis if they produce egg cells. they need only mitosis to make large numbers of cells such as sperm.
Some species use both mitosis and meiosis, others only use mitosis since they must use both to produce animal gametes.
Animals divide their sex and non-sex cells through meiosis, while plants divide their sex and non-sex cells through both mitosis and meiosis. The non-sex cells, such as skin, muscle, and blood cells, are divided through mitosis in humans and all other animal species. This is the case because these cells need to be retrieved quickly because they decrease quickly. Sex cells, including male and female gametes, are haploid and divide via meiosis. Cell division during mitosis and meiosis are both necessary for gamete production in plants. If they are to produce plant (or animal) gametes, they must have both sides.
Learn more about meiosis here
https://brainly.com/question/28139153
#SPJ4
in what ways do the macroscopic features of bacterial colonies differ from those of molds
Bacterial colonies are typically smooth while mold colonies are fuzzy. Molds are typically white, gray or green while bacteria come in a variety of colors.
Bacterial colonies are masses of bacterial cells isolated from a single bacterium on a thick media. Within the colony, all bacteria are genetically identical and may be termed clones. Many bacteria colonies are spherical or irregular in shape. Others are actinomycetes with filamentous or rhizoid roots.
Many bacteria colonies are tiny, measuring less than 1 mm in diameter. Be a result, they are referred to as punctiform (pin-point). They, too, have a set margin. The microscope should be used to examine the tip. The color of the colony varies depending on the species. White, buff, violet, purple, and so on.
The surface of the bacterial colonies might be smooth, gleaming, rough, drab, or craggy (wrinkled). Their texture might be butyrous (buttery), viscid (sticks to ring, difficult to remove), brittle/friable (dry, breaks apart), or mucoid (sticky, mucus-like).
Fungus are eukaryotic organisms that include yeast, filamentous fungi, and mushrooms. Fungi thrive in moist, warm environments. They can be classified based on their morphological and molecular characteristics. Fungi formation on solid medium such as potato dextrose agar may clearly predict morphological properties (PDA).
PDA is a popular instrument in labs for growing fungus. When cultivated in stable medium, fungi form colonies. Fungal colony morphologies change amongst different species of fungus. Characteristics such as pigmentation and texture can be noticed in fungus colonies.
Fungi colonies differ from bacterial colonies. Fungi appear as powdery or fuzzy textured colonies. Hyphae of fungi spread through the solid medium, forming colonies of rhizoids or filaments. Fungal colonies may not be visible as little greasy spots. Colors of mycelium and spores also differ widely amongst fungus species. A comparison of bacterial and fungal colonies.
Learn more about bacterial colonies at https://brainly.com/question/22087997
#SPJ4
Place the labels in order denoting the flow of blood through the structures of the heart beginning with the vena cavae Systemic capillaries Ascending aorta1 8 15 Bicuspid valve (mitral) Pulmonary valve 2 9 6 Superior vena cavae Pulmonary artery 3 10 L. subclavian artery Right ventricle Aortic valve Left ventricle 4 Pulmonary trunk Lungs 5 Tricuspid valve Left atrium 13 Right atrium Coronary arteries Pulmonary vein
1) body 2) inferior/superior vena cava 3) right atrium 4) tricuspid valve 5) right ventricle 6) pulmonary arteries 7) lungs 8) pulmonary veins 9) left atrium 10) bicuspid valve 11) left ventricle 12) aortic valve 13) aorta
Differentiate between double circulation and systemic circulation?Double circulation:
Blood circulates twice through the heart in a single complete cycle thanks to the phenomenon known as double circulation.The pulmonary circulation and the systemic circulation are two distinct channels through which blood cycles twice.Animals and birds both have two circulatory systems.Systemic circulation:
A systemic blood flow connects the heart and bodily tissues.The left ventricle supplies oxygenated blood to every part of the body.Blood that has lost oxygen returns from the tissue to the right atrium.The systemic circulation delivers oxygen and other vital nutrients to tissues while also transporting CO2 and other dangerous substances for removal.To learn more about circulation visit:
https://brainly.com/question/28915450
#SPJ4
the development of the embryo in the uterus and the young are born alive
Answer:
whats the question ?? keep it
Image of a box divided in half by an imaginary line. The concentration of atoms is higher on the left than on the right.
The image shows a box divided in half by an imaginary line. The left side of the box has a higher concentration of atoms than the right side.
What is imaginary line?An imaginary line is a line of demarcation that does not actually exist in the physical world. It is a concept used to separate two different areas, demarcate boundaries, or create imaginary borders. Imaginary lines are often used in literature, art, music, and other forms of creative expression. They can be used to illustrate a theme, draw the focus of attention, or create a sense of separation. Imaginary lines can also be used to mark off specific areas of a map or delineate a nation's boundaries. By definition, imaginary lines are non-existent and cannot be physically observed, but they can be used to represent something in a creative or meaningful way.
This is an example of a heterogeneous mixture, where the composition of the mixture varies in different parts of the box. The difference in concentration of atoms is due to the unequal distribution of molecules across the boundary.
To learn more about imaginary line
https://brainly.com/question/24811716
#SPJ1
refer to the flowchart. which phrase best fills in the missing information in the flowchart? chemical energy stored in electron transport proteins chemical energy stored in oxygen chemical energy stored in a proton concentration gradient chemical energy stored in atp synthase
The flowchart's missing information refers to the manner in which chemical energy is stored after the electron transport chain. The term "chemical energy stored in a proton concentration gradient" best fills in the blanks in the flowchart.
The electron transport chain (ETC) is the final stage of cellular respiration, which is a metabolic process that transforms glucose and other organic molecules into ATP energy (adenosine triphosphate). During the ETC, electrons are transported via a sequence of protein complexes in the inner mitochondrial membrane, eventually generating a proton gradient across the membrane.
Because electrons given to the ETC are utilised to push protons (H+) from the mitochondrial matrix to the intermembranous space, a larger concentration of protons is produced in the intermembranous space than in the matrix. The protons then return to the matrix through an ATP synthase enzyme, which uses the energy produced by the flow to fuel the synthesis of ATP from ADP (adenosine diphosphate) and inorganic phosphate.
As a result, chemical energy is stored in the ETC in the form of a proton concentration gradient, which is formed by pumping protons across the inner mitochondrial membrane. ATP synthase then uses this stored energy to power the creation of ATP, the fundamental energy currency of cells.
For more such questions on electron transport chain, click on:
https://brainly.com/question/876880
#SPJ4
what is the name for the small movements of your eye that are pieced together by the brain into perceptually seamless visual movement?
The small movements of your eye that are pieced together by the brain into perceptually seamless visual movement is called saccades.
A saccade is a fast, synchronized change in fixation in the same direction for both eyes between two or more phases. Conversely, the eyes move smoothly in fluid pursuit motions as opposed to abruptly. The occurrence can be related to a change in the frequency of an outgoing signal or a movement of a bodily part or apparatus.
Humans and many other animals don't fixate their gaze on a subject while seeing it; instead, they shift their eyes to find intriguing details and create mental "maps" of the image in three dimensions.
To know more about saccade
brainly.com/question/30668006
#SPJ4
The property of soil which describes how well soil holds water is called
Soil porosity is the property of soil that describes how much amount of water the soil can hold, the correct option is B.
The minuscule spaces between soil particles are known as soil porosity or soil pore space. These pores are big and numerous enough in healthy soil to hold the water, oxygen, and nutrients that plants require to receive through their roots. Micro-pores, macro-pores, or bio-pores are the three main types of soil porosity.
These three groups assist us comprehend the soil's permeability and water-holding capacity by describing the size of the pores. For instance, the relatively small gaps of micropores are less impacted by gravity and may hold onto water and nutrients longer than macropores, which lose water and nutrients to gravity more quickly.
To learn more about soil follow the link : https://brainly.com/question/23813511
#SPJ4
The complete question is:
The property of soil which describes how well soil holds water is called
A. field capacity
B. Soil porosity
C. Buffering capacity
D. surface tension
What is the classification of the aldosterone hormone?
The adrenal gland produces the steroid hormone aldosterone, which is specifically a mineralocorticoid. It works on the kidneys to encourage the reabsorption of sodium ions and the excretion of potassium ions.
It is involved in controlling the balance of electrolytes (such as sodium and potassium) and water in the body. Aldosterone and other steroid hormones are created in the adrenal cortex from cholesterol. They can pass cell membranes and bind to intracellular receptors because they are lipid-soluble. This causes changes in gene expression and cellular activity. The hormones cortisol, estrogen, and testosterone are more examples of steroid hormones. Hormones are often categorized based on their chemical make-up and how they interact with receptors in the body. Aldosterone is categorized as a steroid hormone because of its chemical composition and ability to connect to intracellular receptors in the body.
To learn more about hormone, click here:-
https://brainly.com/question/30587686
#SPJ4
how myelination in a neuron causes the action potential to
Myelin is a fatty material that is wrapped around the axon of a neuron during the process of myelination. Electrical signals can move down the axon more quickly because myelin serves as an insulator.
How does myelin affect action potential?A protective layer or sheath called myelin develops around nerves, including those in the brain and spinal cord. It is composed of fatty and protein components. Electrical impulses may move swiftly and effectively along nerve cells thanks to the myelin coating.
What impact does myelination have on how neurons work?Electrical insulation and trophic support are provided by the compacted lipid membranes that make up myelin, which wraps around the axons of many neurons. Action potentials can travel along an axon thanks to myelin.
To know more about myelination visit:-
https://brainly.com/question/10067443
#SPJ4
5. A diff-jumper of mass 68.0 kg stands on the edge of a cliff and possesses 16,800 J of potential energy.
How high up is this lunatic from the base of the cliff?
Page 1 of 1
Answer:
Explanation:
To determine the height of the cliff, we can use the formula for potential energy:
PE = mgh
where m is the mass of the object (68.0 kg), g is the acceleration due to gravity (9.8 m/s^2), and h is the height of the cliff.
Rearranging the formula to solve for h:
h = PE / (mg)
h = 16,800 J / (68.0 kg * 9.8 m/s^2)
h = 16,800 J / 658.4 N
h = 25.5 meters
Therefore, the diff-jumper is 25.5 meters high from the base of the cliff.
What are the main differences between domain bacteria and archaea?
The key distinction between archaea and normal bacteria is that the cell wall of an archaeon is made up of a special kind of chemical called pseudo murein, which is not present in bacteria.
In contrast to bacteria, archaea can survive in more friendly conditions like salt lakes and hot springs. More so than bacteria, archaea rely on anaerobic respiration and fermentation to exist. They also have a different form of metabolism. Finally, compared to bacteria, archaea have a different set of genetic material that is all their own. The Bacteria and Archaea domains have very different cell walls in terms of composition. peptidoglycan, a mixture of proteins and sugars, makes up the cell walls of bacteria, whereas polysaccharides make up the cell walls of archaea (sugars).
To know more about archaea refer to the link below :
brainly.com/question/1475001
#SPJ4
High levels Pfr triggers development of flower primordia in long day plants by promoting transcription of the gene CO. true or false?
It is True that high levels of Pfr trigger the development of the flowering complex in long-day plants by promoting transcription of the CO gene.
What does PFR do in plants?Pfr is the bioactive form of the protein. Red light exposure causes plant bioactivity and exposure to far-red light changes Pfr to inactive Pfr form, and phytochrome activity inhibited. These two forms together represent phytochrome system
How does PFR inhibit flowering?Pfr is the bioactive form of the protein. Exposure to red light leads to physical activity in plants. In general, experimental results conclude that PFR of phytochromes is required for long-term flowering of plants. Prevents short-day plants from flowering.
What do phytochromes do in short-day plants?In short-day plants, active phytochromes (Pfr) suppress flowering. During long periods of darkness (long nights), Pfr is converted to Pr. In the absence of Pfr, flowering is unrepressed and short-day plants flower.
To learn more about phytochromes visit:
https://brainly.com/question/14281934
#SPJ4
a double-stranded dna oligonucleotide and a double-stranded rna oligonucleotide of identical sequence (substituting u for t) are both present in an aqueous solution near neutral ph. apart from the presence of u in rna versus t in dna, how will their helical structures differ?
In terms of their helical structures, DNA and RNA differ in several ways. Firstly, DNA typically forms a double-stranded helix, with the two strands held together by hydrogen bonds between complementary base pairs.
These base pairs consist of adenine (A) paired with thymine (T), and cytosine (C) paired with guanine (G). In contrast, RNA typically forms a single-stranded helix, although it can fold back on itself to form double-stranded regions. RNA also contains the base uracil (U), which pairs with adenine (A) in a similar manner to thymine (T) in DNA.
In terms of the specific question posed, a double-stranded DNA oligonucleotide and a double-stranded RNA oligonucleotide of identical sequence (substituting U for T) would differ primarily in their helical structure due to the difference in base pairing. In RNA, uracil (U) would pair with adenine (A), while in DNA, thymine (T) would pair with adenine (A).
This difference in base pairing would affect the overall shape of the molecule, as well as the stability of the helix. In particular, the hydrogen bonding between uracil (U) and adenine (A) is weaker than that between thymine (T) and adenine (A), meaning that the RNA helix may be less stable than the DNA helix.
Learn more about double-stranded DNA at : https://brainly.com/question/14761050
#SPJ4
Plants produce their own food by the process of photosynthesis. True or false and why
The statement "Plants produce their own food by the process of photosynthesis" is true.
What is photosynthesis?Photosynthesis occurs in the stomata of leaves of plants. They make glucose and oxygen.
All autotrophic organisms including plants, plankton, and others have photosynthesis as a distinctive characteristic. In the presence of sunshine, organic food is synthesized using an inorganic source, of carbon dioxide.
Plants are autotrophs, and they contain a green pigment called chlorophyll, which helps them to make their own food with sunlight, carbon dioxide, and water.
Therefore, the statement is true.
To learn more about photosynthesis, refer to the link:
https://brainly.com/question/26578564
#SPJ1
Which of the active transport types employs diffusion?
Symport
Uniport
Antiport
Uniport and Antiport
All types of active transport make use of some form of diffusion.
The efficient transportation type that uses diffusion is called Symport.
The process of using energy to push molecules across a cell membrane—typically against concentration gradients—is known as active transport. The sodium-potassium pump, antiporters, and symporters are membrane proteins involved in physical transport. Symports are proteins that allow two molecules to travel across a membrane simultaneously (also called synporters, synports, or symporters). The protein is referred to be an antiport if two substances are transported across the bilayer in the opposite directions. Ionophores are proteins that help ions travel. An antiporter, a cotransporter or integral membrane protein, is engaged in the secondary active transport of two or more distinct molecules or ions along a phospholipid membrane, such as the plasma membrane, in the opposing directions.
Learn more about transportation
https://brainly.com/question/1748716
#SPJ4
hypoparathyroidism causes hypocalcemia by: a. increasing phosphate excretion b. increasing serum magnesium c. blocking release of calcium from bone d. blocking action of intestinal vitamin d
Hypoparathyroidism causes hypocalcemia by d) blocking the action of intestinal vitamin D. The parathyroid hormone (PTH), which is produced by the parathyroid gland, plays a key role in maintaining calcium homeostasis in the body.
PTH acts on several organs, including the kidneys, bones, and intestines, to increase calcium levels in the blood. One of the ways it does this is by stimulating the production of active vitamin D in the kidneys, which in turn increases calcium absorption in the intestines.
In hypoparathyroidism, the parathyroid gland does not produce enough PTH, leading to decreased calcium levels in the blood. This occurs because the production of active vitamin D is reduced, which decreases calcium absorption in the intestines, and also leads to increased calcium and phosphate loss through the kidneys.
Hypocalcemia can cause a variety of symptoms, such as muscle cramps, tremors, and seizures, and it can be a medical emergency if left untreated.
Learn more about hypoparathyroidism here:
https://brainly.com/question/8835144
#SPJ4
plant cell structure
A cell wall, a large central vacuole, and plastids like chloroplasts are all present in plant cells.
What is the structure of a plant cell?The cell wall is a thick, stiff layer that surrounds and supports the cell structurally and physically. It is located outside the cell membrane. Turgor pressure against the cell wall is maintained by the central vacuole.
Plastids, a sizable central vacuole, and a stiff cell wall are all features of plant cells. The cell wall offers structural defense and support. Water and nutrients can enter and exit cells thanks to pores in the cell wall.
Therefore, the cell walls, central vacuole, and chloroplasts are components of a plant cell.
Learn more about plant cells, here:
https://brainly.com/question/254757
#SPJ9
