The cell membrane's function is to..

O allow nutrients in, and send wastes out of the cell

O to control the amount of water that enters the cell

O to block all nutrients from entering the cell

Answers

Answer 1

Answer:

The first bullet point is correct

Explanation:

The cell membrane controls what comes in and out of the cell, it needs minerals so would not block them completely, and water does not enter cells so it is clearly the first one.


Related Questions

Pure water would have what kind of tonicity?:

Answers

Answer: Tapwater and pure water are hypotonic. A single animal cell ( like a red blood cell) placed in a hypotonic solution will fill up with water and then burst.

Explanation:


Compound X is used as an energy source in respiration.
Suggest the name of compound X.


Answers

Answer:

Glucose

Explanation:

After reading the overview of cellular respiration, the primary or initial fuel of respiration should be clear - it's glucose, which is the molecule of sugar that plants create for animals (as well as the plant itself) to utilize as an energy source.

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Cooler denser air produces an area of _________pressure, and moves in under rising air.

Answers

Answer:

cooler denser air produces an area of higher air pressure and moves in under rising air

Explanation:

baby names connect to gender, and names flow from male to androgynous to female but never in reverse. the reason for this is that

Answers

In most cultural and religious doctrines, masculinity seems to be weighted well above the feminine gender. Hence, greater level of power or hierarchy is leveled towards the masculine gender. Hence, the reason for the trend in m naming pattern is due to the power alloted to male species.

Naming pattern usually follow the standard trend of having a root which is meant for the male kid, before transitioning to a fairly refined or similar name which is attributed to female kids.

Intermediate names which can be used for either gender are called androgynous names sometimes precedes the female naming convention.

Therefore, the pattern of naming with the masculine version coming first is due to the higher heirachical power given to males.

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what is the modification of plant?why are different parts of plants modified? write
please help:(​

Answers

Answer:

what is the modifications of plants?

ans -In some plants, the roots change their shape and get modified to absorb and transport water and minerals from the soil to different parts of the plant. They are also modified for support, food storage, and respiration. The root modifications perform two major functions- Physiological and Mechanical.

Cell Division: Parts of Nephron

Leaf Structure: Genotype Meaning

2.why are different parts of plants modified?

ans-Certain parts of a plant undergo modification in order to adapt to their surroundings and environmental conditions. These modifications help them in their survival against odds. For example, the leaves in a cactus plant are modified to spines to reduce the surface area and hence water loss by evaporation.

Why do lysosomes keep their digestive
enzymes in membranous sacs?

A. because the membranous sacs can sense when the cell is about
to be attacked

B. because the membranous sacs keep the digestive enzymes
from destroying the cell

C. because the membranous sacs act as tails that help the
lysosomes move faster

D. because the membranous sacs act as factories helping the
digestive enzymes make proteins

Answers

B. The lysosome membrane helps to keep its internal compartment acidic and separates the digestive enzymes from the rest of the cell.

The correct answer is option B. because the membranous sacs keep the digestive enzymes from destroying the cell.

What is the purpose of the membrane surrounding the lysosome?

The membrane surrounding the lysosome is vital to ensure these enzymes do not leak out into the cytoplasm and damage the cell from within. In order to maintain the acidic pH of the lysosome, protons are actively transported into the organelle across the lysosomal membrane.

What part of the cell is a membranous sac?

A vesicle is a small, membrane-bound sac that transports substances in cells. The ER moves proteins and other substances within eukaryotic cells. Vesicles that contain newly made proteins move through the cytoplasm from the ER to an organelle called the Golgi apparatus.

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cells obtain energy by ________ food molecules such as glucose.

Answers

Answer:

Crushing them

Explanation:

ANSWER: cells obtain energy by CRUSHING food molecules such as glucose.

An organism suffers damage from chemical exposure, causing a cell to increase the production of a protein that promotes cell division. This division is rapid and uncontrolled.

How would this impact the organism?


The organism would be able to heal minor injuries rapidly.

The organism would be able to heal minor injuries rapidly.

The organism would begin to develop cancerous masses.

The organism would begin to develop cancerous masses.

The organism would stop growing.

The organism would stop growing.

The organism would start to evolve.

The organism would start to evolve.

Answers

Uncontrolled cell growth is often associated with mutations in genes encoding proteins that promote cell division. These regulatory proteins are known as mitogens or growth factors.

The consequence of a mutation that leads to rapid and uncontrolled cell growth is that the organism would begin to develop cancerous masses.

Cancer is uncontrolled cell growth, which is caused by mutations in genes involved in the control of cell division.

A growth factor is a molecule capable of inducing cellular growth and proliferation.

A mitogen is a protein that induces a cell to begin mitosis (e.g., the Platelet-derived growth factor).

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What causes muscles to get sore?

Answers

When muscles are required to work harder than they're used to or in a different way, it's believed to cause microscopic damage to the muscle fibres, resulting in muscle soreness or stiffness. DOMS is often mistakenly believed to be caused by a build up of lactic acid, but lactic acid is not involved in this process.

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blood is distributed from the surface of a bone to deeper central canals through channels known as

Answers

Perforating canals good luck

Blood is distributed from the surface of a bone to deeper central canals through channels known as Haversian canals.

What is Haversian canal?

Haversian canals are small channels that run through the bone tissue, and they serve as the highways for blood vessels, nerves, and lymphatic vessels. They distribute blood and other essential nutrients to the bone tissue and allow for the removal of waste products.

These canals are surrounded by concentric layers of bone matrix, known as lamellae, and they help to maintain the structural integrity of the bone. The distribution of blood through the Haversian canals is essential for the health and maintenance of the bone tissue.

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what colors are tissues that contain only xanthophylls

Answers

Answer:

Light Wavelengths for: Xanthophylls and Carotenes Typically, xanthophylls are yellow while carotenes are orange. It is these pigments that give carrots, yellow peppers, and pumpkins their color.

Explanation:

Answer:

Typically, xanthophylls tissues are yellow. However, Xanthophylls are a class of oxygen-containing carotenoid  with four pigments. They are responsible for the different colors  (yellow, orange, and red).

Explanation:

A healthy, balanced ecosystem has _______.
a.
fewer producers than consumers
b.
more quaternary consumers than primary consumers
c.
more producers than consumers
d.
fewer primary consumers than tertiary consumers


Please select the best answer from the choices provided
A healthy, balanced ecosystem has _______.
a.
fewer producers than consumers
b.
more quaternary consumers than primary consumers
c.
more producers than consumers
d.
fewer primary consumers than tertiary consumers


Please select the best answer from the choices provided

Answers

Answer:

D or B I'm thinking its D

Explanation:

Answer: C

Explanation:

Maria owns a bakery and bakes many different types of yeast breads. One day she notices that the bread she baked is flat and does not contain the air bubbles that are usually present. Which of the following would be a good explanation for what has happened to her yeast?

Answers

Cake is the first thing in the morning

as you are reading this question, the cells in your eyes are firing in response to the light coming from this paper. which type of neuron is carrying this message to the brain?

Answers

Answer:

sensory neuron

Sensory neurons are responsible for carrying the message or information from the sense organs such as eyes, ears, nose to the brain.

What are sensory neurons?

Sensory neurons are the nerve cells which are activated by the sensory input from environment. The sensory input include touching a hot surface with the fingertips, the sensory neurons will be the ones that are firing and sending off signals to the rest of the nervous system in the body about the information they have received.

There are five common types of sensory neurons which include mechanoreceptors, thermoreceptors, nociceptors, electromagnetic receptors and chemoreceptors.

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during photosynthesis where is water split and oxygen released

Answers

Answer:

Stroma

Explanation:

Stroma Function. Most of the enzymes essential in the process of photosynthesis are normally embedded in the stroma and in the thylakoid membranes. The stroma is the fluid-filled space that is surrounding the grana, and is also involved in the synthesis of organic molecules from water and carbon dioxide.

The answer is true .

what are buffers and why are they important to cells

Answers

Answer:

Buffers are chemicals that help a liquid resist changing its acidic properties when other chemicals are added that will normally cause a change in these properties.

Answer:

buffers are chemicals that help a liquid resist changing its acidic properties. the reason they are important to cells is because buffers maintain the right pH of a liquid.

source(s)

https://sciencing.com/role-of-buffers-in-cells-12731573.html

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Which of the following statements is NOT TRUE about photosynthesis and cellular respiration ?

A) both processes requires energy

B) photosynthesis occurs in plants; cellular respiration occurs in plants and animals

C) both processes occur in the mitochondria

D) the chemical equations for the processes are opposite of each other

Answers

Answer:

I think D (the chemical equations for the processes are opposite of each other)

Hope this answer is correct ಥ‿ಥ

What is the importance of reproduction in plants?

Answers

Answer:

Reproduction is important in plants to produce their progeny and to maintain its population. Plant reproduction helps to maintain its birth rate and sustain the ecosystem. Reproduction helps to acquire new variations and adapt to the environment with the most desirable characters.

Explanation:

major difference between positive and negative feedback loops?

Answers

Answer:

Negative feedback loop-keeps in check

Positive feedback loop- increases quality of another variable

Explanation:

How many neutrons and protons does carbon have

Answers

Answer:

Carbon has an atomic number of 6. That means a carbon atom has 6 protons, 6 neutrons, and 6 electrons.

Your friend khamil experience a sharp, intense pain when he contracted his leg muscle running. Assuming this is indeed a muscle strain, it would be described as

Answers

Answer:

Muscle strain

Explanation:

Muscle strain

Answer:

B. Active

You're Welcome

Answer this question pls

Answers

bruv the question is so blurry its impossible to see take a pic from your phone and I'll answer it

What are laticifers?​

Answers

Answer:

In short words, Laticifers is a cell, tissue, or vessel that contains or conducts latex.

Explanation:

A laticifer are a type of elongated secretory cell found in the leaves and/or stems of plants that produce latex and rubber as secondary metabolites.

Answer:

A laticifer is a type of elongated secretory cell found in the leaves and/or stems of plants that produce latex and rubber as secondary metabolites.

does the moon make it's own light? explain how the moon gives us light at night?​

Answers

Answer:

The moon does not make it's own light

Explanation:

The light from the sun reflects off of the moon, which makes it look like it is glowing. That is how the moon gives us light at night.

Which is an example of active transport

Answers

Answer:

sodium-potassium pump.

Answer:

exocytosis

pinocytosis

phagocytosis

Explanation:

Explain the statements:
"all species are highly evolved" and
"all species are mutants"

Answers

Answer:When an animal's genes change, or mutate, the new form of the animal that results is a mutant. One example of such a mutant is a blue lobster.

Explanation:

Se genera con el calor.

Answers

Answer:

3 it fier not one or tow it 3

Explanation:

this answer it 3 pants

which molecule gets translated into a protein by the ribosome?

Answers

Answer:

Within the ribosome, the rRNA molecules direct the catalytic steps of protein synthesis — the stitching together of amino acids to make a protein molecule. In fact, rRNA is sometimes called a ribozyme or catalytic RNA to reflect this function.

Explanation:

Molecule gets translated into a protein by the ribosome within the ribosome, the rRNA molecules direct the catalytic steps of protein synthesis the stitching together of amino acids to make a protein molecule. In fact, rRNA is sometimes called a ribozyme or catalytic RNA to reflect this function.

What is RNA?

Full form of RNA has ribonucleic acid and it has a nucleic acid which has been found in almost all cells that are living and RNA has mostly similar to DNA but there is one difference between RNA and DNA and the difference is that RNA has single stranded but DNA is double stranded.

The RNA has backbone has made up of the phosphate group which has arranged in alternating form and the sugar known as ribose other than the deoxyribose  present in DNA. There are four bases found in RNA and these are adenine, uracil, guanine, and cytosine.

The main function of mRNA is it work as imedieter between protein and DNA which is utilised by ribosome for the process of direct synthesis of protein, and the function of tRNA is to carry the accurate amino acid to the proteins synthesis site which takes place in ribosome.

Therefore, Molecule gets translated into a protein by the ribosome within the ribosome, the rRNA molecules direct the catalytic steps of protein synthesis the stitching together of amino acids to make a protein molecule.

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If this organelle was removed the cell would no longer be able to perform cellular
respiration?

Answers

Answer:

No energy would be produced for the cell since cellular respiration wouldn't occur. Proteins would not be made. All the organelles would bump into each other and they would not be held in place. ... Controls the cell's activities.

Explanation:

ou are designing a building that must minimize energy transfer in the form of heat loss. Describe a building shape that you think would minimize heat loss through the surface of the building, and explain how that shape relates to the surface area-to-volume ratio.

Answers

Answer: In principle, to minimise heat transfer through the building envelope the building shape should be as compact as possible,tending toward a cube.

Explanation:

A building's design should be compact and rounded to reduce heat loss through the surface. The optimum shape would be a sphere, but that is impractical for a building. It would be more practical to construct a building that is cylindrical or dome-shaped.

What should be the shape of building to minimize the heat?

The optimum shape would be a sphere, but that is impractical for a building. It would be more practical to construct a building that is cylindrical or dome-shaped.

By lowering the building's surface area, this design limits the region where heat may escape from the structure. The surface area to volume ratio should be taken into account while trying to reduce heat loss.

A building that is compact and rounded, such a cylinder or dome, has a lower surface area-to-volume ratio than a building that is rectangular or square and has the same volume. Accordingly, less heat is lost from the building's surface in comparison to the heat that is kept inside the structure.

Additionally, a compact, rounded building will have fewer corners and edges, which are vulnerable to heat loss. Additionally, the structure can be angled to receive as much sun exposure as possible, which can add to the building's heating capacity during the winter.

Therefore, a building's design should be compact and rounded to reduce heat loss through the surface.

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