Answer:
C
Explanation:
A scientist analyzing an unknown substance has determined that it consists of
carbon, hydrogen and oxygen. During experimentation, she determines that the
substance is soluble in oil but not in water.
Which of the following macromolecules is the unknown substance most
likely to be?
Answer: Lipid
Explanation:
The answer would be lipid because it is made of CHO. Lipid is also nonpolar (does not dissolve in water) but it is found in oils, wax, butter, etc.
The type of macromolecule is the unknown substance that is most likely to be lipids. This is because they are ideally insoluble in water but are readily soluble in oil, fats, etc.
What is a macromolecule?A macromolecule may be defined as a very large molecule that is significantly important to biophysical processes. These molecules are generally composed of thousands of covalently bonded atoms. Many macromolecules are polymers of smaller molecules called monomers.
Examples of macromolecules may include carbohydrates, lipids, proteins, and nucleic acids. Lipids are nonpolar in nature which means that they are not soluble in water. They are readily soluble in nonpolar solvents like ether, chloroform, and benzene. Lipids generally consist of elements like carbon, hydrogen, and oxygen.
Therefore, a lipid is the type of macromolecule that is the unknown substance that is most likely to be.
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teratogens have their largest structural effects during the embryonic period primarily because this is the time when the unborn baby is
Teratogens refer to substances, chemicals, or environmental agents that cause birth defects or malformations in a developing fetus when pregnant women are exposed to them.
Teratogens have the most significant structural effects during the embryonic period, primarily because this is the time when the unborn baby is rapidly growing and developing.
During this period, the developing fetus is referred to as an embryo and goes through a series of critical stages, such as gastrulation, neurulation, and organogenesis. Therefore, any interference with this stage can be extremely harmful and damaging to the unborn baby.
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Order the terms according to the path followed by oxygen during cellular respiration.
Lungs, outsidesir, Bloodstream, nose, Cell.
The order of the terms according to the path followed by oxygen during cellular respiration is: Nose -> Lungs -> Bloodstream -> Cell.
What is cellular respiration?Cellular respiration is a process by which living cells consume oxygen and food molecules to produce energy and carbon dioxide as waste.
It is the method through which the cells in our bodies generate energy in the form of ATP.
The steps of cellular respiration are: Glycolysis - It occurs in the cytoplasm of the cell. The process breaks down glucose into two pyruvic acid molecules. Krebs cycle (Citric Acid Cycle) - It happens in the mitochondrial matrix. Acetyl CoA enters the cycle and, with the help of enzymes, goes through a series of reactions, releasing carbon dioxide, ATP, and NADH or FADH2.
Electron Transport Chain - This phase occurs in the mitochondria's inner membrane. NADH and FADH2 produced in the Krebs cycle transfer their electrons to the chain, which causes the hydrogen ion concentration to rise and creates a gradient that forces the hydrogen ion back through the ATP synthase, resulting in ATP synthesis.
The path of oxygen during cellular respiration is: Nose -> Lungs -> Bloodstream -> Cell.
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I will give brainliest
Answer:
Statements based on experiments or observations that have been done multiple times with the same result, that describe or predict natural phenomena.
Explanation:
the correct sequence of chambers, including the lungs, that blood flows from the venae cavae to the aorta is
The correct sequence of chambers, including the lungs, that blood flows from the venae cavae to the aorta is Venae Cavae → Right Atrium → Tricuspid Valve → Right Ventricle → Pulmonary Valve → Pulmonary Artery → Lungs → Pulmonary Veins → Left Atrium → Mitral Valve → Left Ventricle → Aortic Valve → Aorta.
1. Venae Cavae: Blood enters the heart through two large veins called the superior vena cava and the inferior vena cava. These veins carry deoxygenated blood from the body back to the heart.
2. Right Atrium: The deoxygenated blood from the venae cavae flows into the right atrium of the heart.
3. Tricuspid Valve: From the right atrium, the blood passes through the tricuspid valve, which separates the right atrium from the right ventricle.
4. Right Ventricle: The blood moves into the right ventricle, which then contracts to pump the blood out of the heart.
5. Pulmonary Valve: The blood exits the right ventricle and passes through the pulmonary valve, which leads to the pulmonary artery.
6. Pulmonary Artery: The pulmonary artery carries the deoxygenated blood to the lungs.
7. Lungs: In the lungs, the blood undergoes oxygenation through the process of gas exchange. Oxygen is absorbed, and carbon dioxide is released.
8. Pulmonary Veins: The now oxygenated blood returns to the heart through the pulmonary veins.
9. Left Atrium: The oxygenated blood enters the left atrium of the heart.
10. Mitral Valve: From the left atrium, the blood passes through the mitral valve, also known as the bicuspid valve, which separates the left atrium from the left ventricle.
11. Left Ventricle: The blood moves into the left ventricle, which is the largest and strongest chamber of the heart.
12. Aortic Valve: The blood exits the left ventricle and passes through the aortic valve, leading to the aorta.
13. Aorta: The aorta is the largest artery in the body and carries the oxygenated blood to the rest of the body, supplying it with oxygen and nutrients.
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The correct sequence of chambers, including the lungs, that blood flows from the venae cavae to the aorta is as follows; Right atrium, right ventricle, pulmonary artery, lungs, pulmonary vein, left atrium, left ventricle, aorta.
The blood circulatory system is responsible for the transportation of oxygen, nutrients, and other substances throughout the body. Blood is circulated throughout the body through the heart, which has four chambers, and the blood vessels.
Blood is carried to the heart by two large veins: the inferior vena cava (which carries blood from the lower part of the body) and the superior vena cava (which carries blood from the upper part of the body). The right atrium receives blood from both these veins.
This blood is then pumped by the right ventricle through the pulmonary artery to the lungs where it gets oxygenated. The oxygen-rich blood is then returned to the heart through the pulmonary vein, which enters the left atrium.
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what are the caractheristics of viruses,bacteria,protists and fungi
Answer:
Bacteria,fungi and protists are all heterotrophs, taking their food source from something else. Fungus can also be used as food or as a pest, poisoning and killing plants in your yard (watermole- Potatoe famine). Protists: Protists have eukaryotic cells,and can be heterotropic but can be autotropic.
Which of the following describes the appearance of K. pneumoniae growing in a Triple Sugar Iron slant?
a) Acid slant, acid butt
b) Acid butt, acid slant
c) Alkaline slant, acid butt, H2S positive
d) Alkaline slant, alkaline butt, H2S positive, gas +
e) Acid slant, Acid butt, gas +
The correct description of the appearance of K. pneumoniae growing in a Triple Sugar Iron slant is: alkaline slant, alkaline butt, H2S positive, gas + (option d).
Klebsiella pneumoniae is a gram-negative bacterium that can be identified based on its appearance on a Triple Sugar Iron (TSI) slant, which is a differential media used for the identification of enteric bacteria. The TSI slant contains sugars (lactose, glucose) and an indicator system to detect various metabolic reactions.
When K. pneumoniae grows on a TSI slant, it typically exhibits the following characteristics:
Alkaline slant: The pH indicator in the media turns alkaline due to the production of ammonia during glucose fermentation.
Alkaline butt: The entire medium turns alkaline, including the butt portion, indicating continued glucose fermentation.
H2S positive: K. pneumoniae can produce hydrogen sulfide (H2S), which reacts with ferrous sulfate in the media, forming a black precipitate.
Gas positive: The production of gas, usually in the form of carbon dioxide, causes cracks or lifting of the agar in the slant.
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In a biological membrane, the phospholipids are arranged with the fatty acid chains facing the interior:
a. hydrophobic
b. hydrophilic
c. charged.
d. polar
e. filled with water
In a biological membrane, the phospholipids are arranged with the fatty acid chains facing the interior. The term used to describe this characteristic is hydrophobic. Hence, the correct answer is option a. Hydrophobic.
What is a biological membrane?
A biological membrane, also known as a cell membrane or a plasma membrane, is a thin layer that surrounds the cytoplasm of a cell and separates the inside of the cell from the external environment. A biological membrane is made up of lipids and proteins that play a crucial role in the transport of ions and molecules in and out of the cell.
What are phospholipids?
Phospholipids are the most abundant type of lipid found in biological membranes. They are made up of a polar head, which is hydrophilic (attracted to water) and a nonpolar tail, which is hydrophobic (repels water). The hydrophilic head of a phospholipid contains a phosphate group and a glycerol molecule, while the hydrophobic tail is made up of two fatty acid chains.
In a biological membrane, phospholipids are arranged in a bilayer, with the hydrophilic heads facing outwards towards the water-based environment both inside and outside of the cell, while the hydrophobic tails face inward away from the water-based environment.
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What is true for carbohydrates?
Carbohydrates are in contact with the aqueous fluid both inside and outside the cell.
Carbohydrates are present only on the interior surface of a membrane.
Carbohydrates span only the interior of a membrane.
Carbohydrates are present only on the exterior surface of a membrane.
Answer:
the 3rd one
Explanation:
Answer:
Carbohydrates span only the interior of a membrane.
Explanation:
Please match the type of pyrogen with the statement that most accurately describes it to test your understanding of the mechanis behind fever 1. products of infectious agents 2. liberated by white blood cells during phagocytosis
Products of infectious agents: Endotoxins or exotoxins released by bacteria or other pathogens can act as pyrogens and induce fever.
Liberated by white blood cells during phagocytosis: Cytokines, such as interleukin-1 (IL-1), tumor necrosis factor-alpha (TNF-alpha), and interleukin-6 (IL-6), released by white blood cells during phagocytosis, act as pyrogens and contribute to fever development.
Products of infectious agents:
Pyrogens derived from infectious agents, such as bacteria or other pathogens, can induce fever. These pyrogens include endotoxins and exotoxins that are released by the microorganisms during infection. Endotoxins are lipopolysaccharides found in the outer membrane of gram-negative bacteria. When released into the bloodstream, they can trigger an immune response and stimulate the production of cytokines, which in turn signal the hypothalamus to raise the body's temperature set-point, leading to fever. Exotoxins are proteins secreted by certain bacteria that can directly stimulate the release of pyrogenic cytokines or affect the functioning of host cells, resulting in a fever response.
Liberated by white blood cells during phagocytosis:
During phagocytosis, white blood cells, specifically macrophages, engulf and destroy foreign substances, such as bacteria or cellular debris. As part of this process, these cells release various cytokines, which act as pyrogens. Cytokines involved in fever induction include interleukin-1 (IL-1), tumor necrosis factor-alpha (TNF-alpha), and interleukin-6 (IL-6). These cytokines travel through the bloodstream and reach the brain's thermoregulatory center in the hypothalamus. There, they interact with receptors and cause the release of prostaglandins, particularly prostaglandin E2 (PGE2). PGE2 acts on the hypothalamus to increase the body's temperature set-point, leading to fever.
In summary, products of infectious agents, such as endotoxins and exotoxins, can serve as pyrogens and induce fever by stimulating the release of cytokines. Additionally, cytokines released by white blood cells during phagocytosis, including IL-1, TNF-alpha, and IL-6, act as pyrogens and contribute to fever development by altering the body's temperature set-point.
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what is found at or slightly inferior to the midpoint of the shaft, lateral/posterior surface, of the bone of the brachium? select all that apply.
At the midpoint of the shaft, lateral/posterior surface of the bone of the brachium, which is located just below the shoulder joint and just above the elbow joint, the radial groove is found. It is also known as the spiral groove. The radial nerve, which runs down the lateral side of the arm, passes via the radial groove.
The radial groove, which is found on the lateral/posterior surface of the bone of the brachium, has a significant function. It is the groove in the humerus bone that the radial nerve follows. The radial nerve runs down the arm and, in the region of the radial groove, it splits into a deep and a superficial branch. The radial groove is sometimes called the spiral groove because it is twisted or spiraled. The bicipital groove, also known as the intertubercular groove or sulcus, is another groove in the humerus.
This groove is found on the humerus bone's anterior surface, between the greater and lesser tubercles, and it is where the long head of the biceps brachii muscle connects. This muscle, along with the coracobrachialis and brachialis muscles, contributes to the movement of the elbow joint, as well as to forearm supination and shoulder flexion.
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Which combination of processes from the water cycle is most likely to cause flooding?
Answer:
high runoff, low infiltration, high precipitation
what percentage of plant and animal species on earth are found in tropical rainforests?responses10 00%more than 50%
Tropical rainforests account for only about 6% of the Earth's land surface. However, they house the vast majority of the world's plant and animal species. It is estimated that more than half of the world's plant and animal species are found in tropical rainforests.
This means that the percentage of plant and animal species on Earth that are found in tropical rainforests is more than 50%.The exact percentage varies depending on the source, but some estimates put the number at around 80%.
Despite covering such a small area, tropical rainforests are some of the most biodiverse regions on the planet. They provide habitats for countless species of plants and animals, many of which are found nowhere else on Earth.
The loss of tropical rainforests due to deforestation and other human activities has significant implications for global biodiversity and the health of the planet as a whole.
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you are analyzing a tissue from a mammalian species. some of the characteristics you notice are multinucleated cells, striations, and fairly compacted cells. which of the following tissues best fits this analysis? group of answer choices bone blood lung skeletal muscle neural
The analysis best fits the skeletal muscle. Skeletal muscle tissue is the type of tissue that contains multinucleated cells, striations, and fairly compacted cells. These cells are also referred to as muscle fibers. Skeletal muscle is responsible for the movement of the body and is under voluntary control by the central nervous system.
It is also known as striated muscle because of the bands that are visible under a microscope.The tissue is primarily composed of muscle fibers, connective tissue, blood vessels, and nerves. The striations in skeletal muscle are caused by the alternating pattern of actin and myosin filaments that make up the sarcomeres, which are the basic units of muscle contraction.
The other tissues mentioned in the question do not contain multinucleated cells, striations, and compacted cells. Blood is a fluid tissue composed of red blood cells, white blood cells, and plasma. Lung tissue is composed of alveoli and bronchi. Neural tissue is made up of neurons and glial cells, and bone tissue is composed of osteocytes and extracellular matrix.
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The simple molecules connect at an inorganic point to make a larger molecule.The structure of a simple organic molecule makes it possible for simple organic molecules to combine to make a larger molecule. Which statement best explains this phenomenon? (5 points)
The backbone of the organic molecule is made up of carbon atoms.
Organic and inorganic molecules combine to make a larger molecule.
The backbone of the organic molecule is made up of helium and hydrogen atoms.
The simple molecules connect at an inorganic point to make a larger molecule.
Answer: A. The Backbone of the organic molecule is made up of carbon atoms.
Explanation:
wyatt has dna samples from five different suspects and knows that all humans have very similar dna. what feature of dna allows wyatt to match the dna from one of the suspects to the crime scene sample?
The feature of DNA that allows Wyatt to match the DNA from one of the suspects to the crime scene sample is DNA sequencing.
DNA sequencing is the process of determining the precise order of nucleotides (adenine, thymine, cytosine, and guanine) within a DNA molecule. Although all humans have very similar DNA, there are specific regions within the DNA that contain variations or unique sequences called genetic markers.
These genetic markers can be used to distinguish individuals from one another, as they are inherited and passed down through generations.
By comparing the DNA sequences of the crime scene sample with the DNA samples from the suspects, Wyatt can identify matching genetic markers. If the DNA sequences of a suspect match those found at the crime scene, it indicates a potential connection between the suspect and the crime.
This process of DNA sequencing and matching allows for the identification and matching of suspects to the DNA evidence collected at a crime scene.
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can fish see water like that keeps me up all night
Answer:
I do not think so.
Explanation:
As humans don't see air I believe they can't see the water.
Lol Hope this helps :)
what is a protein that detects a signal and acts accordingly.
O hormone.
O receptor.
O membrane.
O carbohydrate.
Answer: Receptor
Explanation: A protein that detects a signal and initiate physical response are receptor proteins.
Answer:
(B) receptor hope that helps
Which of the following is NOT an example of an adaptation?
porcupines have quills that are released to defend against predators
the dappled spots and coloring on a deer helps camouflage it from predators in the forest
all of the above are adaptations
a body builder grows stronger by lifting weights
Explanation:
a body builder grows stronger by lifting weights is not an example of adaptation.
adaptation has to do with an organism having the ability to live safely in a given environment
What is one difference (other than distance from the sun) between terrestrial planets and Jovian planets? Group of answer choices Terrestrial planets are much larger than Jovian planets. Jovian planets are mostly gas and liquid, terrestrial planets are solid and rocky. Terrestrial planets have thick, gaseous atmospheres, while Jovian planets just have thin atmospheres. Jovian planets have a rocky and icy solid surface, while terrestrial planets have no surface to stand on.
Answer:
The correct answer is - Jovian planets are mostly gas and liquid, terrestrial planets are solid and rocky.
Explanation:
Jovian planets also are known as gas planets due to the fact that they are made of gases. These planets are thick or dense with a large size in comparison to the terrestrial planets. These planets have more moon and termed as outer planets.
Terrestrial planets are made of the rocky surface that is denser than gas planets. These planets are known as inner planets. These planets are comparatively smaller and have less or no moons.
At the end of meiosis, the number of chromosomes in each daughter cell is halved because meiosis has 2 points A. two cell divisions and no DNA replication. B. two cell divisions, but one DNA replication. C. one cell division and two DNA replications. D. one cell division and one DNA replication. E. different DNA replication rates for different parts of the genome.
if the value of kd is 1.4 what will be the concentration of ligand needed to bind half of the protein's active site?
The dissociation constant, Kd, is used to quantify the affinity of a ligand for its receptor in biochemical systems. Kd is the dissociation constant for a ligand and its receptor, which is a measure of the ligand's affinity for the receptor. The lower the Kd, the stronger the affinity of the ligand for the receptor.
If the value of Kd is 1.4, the concentration of ligand required to bind half of the protein's active site can be determined. The equation used to calculate the concentration of ligand required to bind half of the protein's active site is:
Kd = [L][P]/[LP]where Kd is the dissociation constant, [L] is the concentration of ligand, [P] is the concentration of protein, and [LP] is the concentration of protein-ligand complex.
The concentration of ligand required to bind half of the protein's active site is equivalent to the concentration of protein-ligand complex, [LP]/2.
Substituting the given values, we get:1.4 = [L]([P])/[LP/2]The equation can be simplified to:Kd = [L]/[LP]We know that [LP] = [P] - [L], so we can substitute this value in the equation:
Kd = [L]/([P] - [L])Simplifying the equation further gives:L = Kd [P] / (1 + Kd)Therefore, if the value of Kd is 1.4, the concentration of ligand needed to bind half of the protein's active site is calculated using the equation above.
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dna polymerase binds to the template dna. in which direction is the new dna subsequently synthesized?
The new DNA is synthesized in the 5' to 3' direction. DNA polymerase binds to the template DNA when replicating a new DNA strand .DNA replication is semi-conservative, meaning that each of the resulting two DNA molecules would have one original strand and one new strand.
It proceeds in a 5' to 3' direction, meaning that DNA is synthesized in a 5' to 3' direction. Therefore, DNA polymerase moves along the template DNA strand in a 3′-to-5′ direction.
DNA polymerase can only extend the free 3′-OH end of the growing strand because it requires a 3′-OH group to add nucleotides to the growing DNA chain. It reads the template DNA strand in the 3′-to-5′ direction but synthesizes the new strand in the 5′-to-3′ direction.
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PLEASE HELP - Toads choose to live in hot, dry regions and bury themselves in the soil during the day. How might this be a behavior important for a survival ?
Which is an example of osmosis?
A. Water moving into the root cells of a plant
B. Oxygen moving into the bloodstream from
the lungs
C. Potassium ions moving in and out of an
animal cell
D. All of the above
Answer:
[tex]\boxed {\tt A. \ Water \ moving \ into \ the \ root \ cells \ of \ a \ plant}[/tex]
Explanation:
First, let's define osmosis.
Osmosis
The movement of a solvent, usually water, through a semipermeable membrane to balance the concentration of a substance.Since it involves the diffusion of a solvent, which is usually water. Therefore, the answer choice that involves the movement of water will be correct.
The best answer choice is A. water moving into the root cells of a plant
In order for an animal cell in a culture to maintain homeostasis, the medium must not:
A. contain water
B. contain wastes
C. allow osmosis to occur
D. allow diffusion to occur
what is referred to as pain, and how is it useful in diagnosing internal disorders?
Pain is defined as an unpleasant sensory and emotional experience associated with actual or potential tissue damage or described in terms of such damage. Pain is essential in diagnosing internal disorders because it serves as a warning signal that the body is experiencing injury or tissue damage.
Doctors can use pain to pinpoint the location of the internal disorder, as well as to determine its severity.
Pain is defined as a discomfort, distress, or suffering caused by damage or illness to a part of the body. Pain can be caused by injury, surgery, illness, emotional distress, or chronic conditions such as arthritis. Pain can be experienced in different ways depending on the type, location, and severity of the injury or illness. It can be sharp, dull, burning, throbbing, stabbing, aching, or cramping.
Additionally, pain can be classified as acute or chronic depending on its duration.Acute pain is sudden and typically lasts less than three months. It is typically caused by tissue damage or injury and is often accompanied by inflammation. Acute pain is a warning sign that the body is experiencing injury or tissue damage. It serves as a protective mechanism to prevent further damage or injury to the affected area.
Referred pain can be caused by a problem in an internal organ, which can make it difficult to diagnose. Doctors use pain to help diagnose internal disorders by taking a detailed medical history, performing a physical exam, and ordering diagnostic tests such as blood tests, imaging tests, or biopsies. In some cases, pain may be treated with medications or other therapies to help alleviate discomfort.
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Millions of people depend on glasses to see far away objects every day. Why are some people unable to see far away objects clearly? How do glasses help this? Research the Internet for the answers to these questions. Then, create an advertisement that explains why some people cannot see far away objects and shows potential customers how glasses help. Include text and a labeled drawing in your advertisement.
People are unable to see far-away objects clearly because of a condition known as myopia. This happens because the cornea is slightly curved.
An advertisement to convince people to buy glassesThe cause of myopia is when light enters the retina and instead of settling on it, it settles in front of it. In this condition, also known as nearsightedness, they can see near objects but not distant objects.
To make the advertisement you can do this:
Are you unable to see distant objects? A solution might just be ready for you. Regain your eyesight with this effective glass that is designed to help you see even your future from a distance. Limited stock is available. Buy now.
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The structure most responsible for maintaining cell homeostasis is the
a. cytoplasm
c. cell wall
b. mitochondrion
d. plasma membrane
Answer:
D
Explanation:
The correct answer as to the structure most responsible for maintaining cell homeostasis would be the plasma membrane. The correct option would, thus, be D.
Homeostasis refers to the maintenance of relatively constant internal processes such as solute concentration, water, etc.
The plasma membrane functions by regulating the movement of substances in and out of the cell.
The normal range of concentration of materials within the cell in which it can function optimally is known as the setpoint.
When the concentration of a particular substance in the cell falls below the setpoint, the plasma membrane would become permeable for the inflow of such substance. Such substance becomes free to move into the cell through diffusion so that the setpoint can be restored.
When the concentration of a particular substance in the cells exceeds the set point, the plasma membrane becomes permeable for the outflow of the substance. The substance, thus, diffuses into the cell until the setpoint is restored.
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cells found in plants and animals have similarities but can differ in function. consider the following two organisms: a corn plant cell (zea mays) and a camel cell (bactrianus ferus). what is the best explanation for the difference in the cellular vacuole size between these two biotic organisms?
Plant and animal cells share a lot of similarities, however, they have certain characteristics that distinguish them from one another. When looking at two organisms, the corn plant cell (Zea Mays) and the camel cell (Bactrianus ferus), the difference in the size of cellular vacuoles can be explained by several factors.
First and foremost, plant cells are generally larger than animal cells. This is due to the presence of a cell wall, which provides support and protection to the cell. Vacuoles are found in both animal and plant cells, but they are much larger in plant cells. This is because plants store a lot of water in their cells, and the large vacuole helps to keep the cell turgid (stiff) so that it can remain upright. The large vacuole of plant cells also plays an important role in the storage of nutrients, waste products, and pigments, among other things.
On the other hand, animal cells are much smaller than plant cells. Animal cells lack a cell wall, and their cytoplasm is much more condensed than that of plant cells. The smaller size of the vacuole in animal cells is due to the fact that they don't need to store as much water as plants. Animal cells also have lysosomes.
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