All categories

2 years ago

This macromolecule forms pumps and channels within the cell membrane. They act like to let molecules in and out of the cell.

Biology

1 answer:

Ilya [14]2 years ago

3 0

Answer:

The macromolecules that forms pumps and channels in the cell membrane, allowing the entry and exit of molecules to the cell are protein.

Explanation:

Membrane integral proteins are a type of macromolecule attached to the structure of the membrane and have ends in contact with the cytoplasm and the extracellular medium.

These protein molecules can act as channels and transporters or pumps, to facilitate the passage of substances through the membrane. An example of transmembrane channels are ion channels, while a protein transporter is the sodium potassium ATP-ase pump.

Membrane proteins can also act as surface receptors and enzymes linked to the cell membrane.

The other options are not correct because :

Carbohydrates can be found on the membrane bound to other molecules, such as glycoproteins and glycolipids, but they do not act as pumps or channels.
Lipids have the function of being the main component of the cell membranes.
Nucleic acids are found in the nucleus, and are not part of the cell membrane.

You might be interested in

Which changes take place in the immune system of a person who is infected with hiv, and how might that infection develop into ai

solniwko [45]

Well a person with HIV would only have AIDS if he/she has really low number of CD4 cells if this is the case that is when doctors would diagnose that person with AIDS. Hope I helped

6 0

3 years ago

drag each label to the correct location on the image label the steps of protein synthesis and the organelles involved in each st

Leni [432]

<h2>Answer:</h2>

Translation: process of protein formation is called translation .

In the process of translation, a cell reads information from a molecule called a messenger RNA and uses this information to build a protein. Translation involves “decoding” a messenger RNA and using its information to build a polypeptide, or chain of amino acids .

Translation involve three major steps

• Initiation ("beginning"): in this stage, the ribosome gets together with the mRNA and the first tRNA so translation can begin.

• Elongation ("middle"): in this stage, amino acids are brought to the ribosome by tRNAs and linked together to form a poly peptide chain.

•Termination ("end"): in the last stage of translation, the finished polypeptide is released to go and do its job in the cell.

Organelles involve in translation:

Ribosomes: main process of translation occour at ribosomes.

Rough endoplasmic reticulum: ribosomes are located on rough endoplasmicreticulum .it bound proteins in the vesicles.Vesicles containing proteins are budded off into cytoplasm and move toward golgi apparatus for further modification .

Golgi apparatus: synthesisezed proteins are not functional . In golgi apperatus they are further modefied and processed and stored for a short time and then released toward destination.

3 0

2 years ago

What Is Ebola? How did it start? How do you spread it?

Grace [21]

Ebola is a deadly virus that tricks the body into damaging its own blood vessels. It originated near the ebola river when some animals probably bit someone or someone went into the river and got the virus inside of them through the nose, mouth, ears, open wounds, or other areas. The only way you can spread it is by getting one's body fluids that is infected with ebola (such as spit, mucus, or other fluids that come from the body), on somebody and the fluid somehow works its way into the body.

3 0

3 years ago

Explain why it is important for dying cells to be properly removed

victus00 [196]

Cells within the body are properly arranged and their production uses up resources of the body. For example, red blood cells use iron while being produced. The body must dispose of cell properly to maintain the orderly arrangement of cells; for example, if dead skin cells were not removed, we would lose feeling in our skin due to the layer of dead cells. Moreover, the body must work to minimize wastage. This is why some of the iron from red blood cells is removed and reused.

6 0

2 years ago

Read 2 more answers

Ill give you a brainliest if it is right

joja [24]

I believe it might be C

6 0

2 years ago