Which statement best describes what happens to protein when a steak is cooked?
a. it denatures and coagulates during cooking.
b. it decreases in size as amino acids are lost.
c. it loses bacteria because they are denatured.
d. it undergoes polymerization to form longer chains

It denatures and coagulates during cooking.

Explanation:

Denaturation is a phenomenon in which the proteins undergo changes in their secondary, tertiary or Quaternary structures. They undergo change in their native state.  

The changes are may be due to heat treatment, application of strong acidic or basic conditions, addition of some salts or solvents or exposure to radiations.  

So if we heat a steak of protein, it loses its native structure and said to be denatured. During this it may also undergoes coagulation.

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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