What is a function of proteins?

Question

to dissolve other nutrients

to provide energy

to store energy

to control chemical reactions

I think its either to dissolve other nutrients or to control chemical reactions but I'm not sure.

Answer 1

The answer is to control chemical reactions.

Proteins are the building blocks of the body and are a critical component of all cells. Among their many functions, they form the structural framework of cells and tissues, they allow for communication with individual cells, and they transport of numerous substances through cells and the blood. It is important to realize that proteins are involved in practically every function in the body and life cannot exist without them.

Answer 2

Proteins are the building blocks of the body and are a critical component of all cells. Among their many functions, they form structural framework of cells and tissues, they allow for communication with individual cells, and they transport of numerous substances through cells and the blood. It is important to realize that proteins are involved in pratically every function in the body and life cannot exist without them. Take a moment to learn about the many roles of proteins.

Answer 3

Proteins have many functions. They serve as enzymatic catalysts, are used as

transport molecules (hemoglobin transports oxygen) and storage molecules (iron is stored

in the liver as a complex with the protein ferritin); they are used in movement (proteins

are the major component of muscles); they are needed for mechanical support (skin and

bone contain collagen-a fibrous protein); they mediate cell responses (rhodopsin is a

protein in the eye which is used for  vision); antibody proteins are needed for immune

protection; control of growth and cell differentiation uses proteins (hormones).  These

are just a few examples of the many, many functions of proteins

Answer 4

Proteins do a ton of different things.  One is to act as enzymes.  And these enzymes catalyze chemical reactions.

Answer 5

Protein are the molecular "hardware" of the cell. The "software" is, of-course, our DNA which codes for this "molecular hardware"

There functions are extremely diverse, everything from catalysts, or enzymes, structural proteins that maintain cell shape, transport of essential chemical in and out of cells and organelles, etc.

Many, but not all, take up the function as enzymes, biological "Catalysts" which increase the speed of chemical reaction.

So, yep! they control chemical reaction and thus direct virtual every single metabolic pathway in the cell.

Many enzymes have so called "allosteric" sites, these are distant from the active site and they bind intermediates of a metabolic pathway and often times these have inhibitory affects on the enzyme. Thus, the cell does not need to waste unnecessary energy to make something it already has.

By the way, RNA, which is simular to proteins in the sense that it too can take on a 3D conformational structure much like proteins also functions as an enzyme, hence catalytic or enzymatic RNA, espically during the processing of pre-mRNA to fully matured mRNA in the nucleus. Such a catalytic RNA is cleverly called "Ribozyme"

Look at the other answers.

1. "They dissolve nutrients" NO! Proteins in the cell are NOT solvents, nothing is "dissolved" in them, in fact, they are actually "solute" dissolved in the aqueous cytosol or nucleosol, the solvent, needles to say, is water.

2. "They Store Energy" While proteins can be broken down into their constituent amino acids that can function as intermediates of the kreb cycle, this ONLY occurs under cases of starvation. Yes, they can be an energy source, but if the cell has to start breaking down its own proteins for energy, that cell is IN BIG TROUBLE.

This only occurs under cases of extreme starvation and diabetes, where the cell is not able to utilize glucose properly due to the lack or ineffectiveness of insulin.

Well, hope that helps ya!

Best of Luck!

Answer 6

The best answer is to control chemical reactions - a function of enzymes, one of the major types of proteins.

Proteins also have other functions, but not generally to store or provide energy per se.  Some enzymes hydrolyze nutrients to make them more soluble, but those proteins are controlling chemical reactions - so that has to be the right answer.

Answer 7

d

Answer 8

It's mainly to control chemical reactions, that's what an enzyme is known for when it catalyzes a reaction (an enzyme is a type of protein).  Dissolving nutrients is really not what a protein doe, and the other 2 have nothing to do with proteins specifically, though they can assist in the storage and provision of energy.  You could make the argument that proteins are involved in all these processes, they just don't do all of them directly (except controlling chemical reactions).

Answer 9

you can say all of them because they definetly occur in chemical reacion by enzymes. they do store energy by6 storaging amino acids. they do provide support without protein, the body wont be able to function.

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hope i helped!!!!!