Question

High amounts of protein are found in foods like meat, dairy products, and nuts. A model of a protein molecule is shown below.
protein molecule

What will happen to this molecule before it is used by the body for energy?
A.
It will combine with carbon dioxide as it goes through an anaerobic process.
B.
It will remain the same and react with molecules that provide the cell with oxygen.
C.
It will provide the cell with oxygen as it goes through a physical change.
D.
It will go through an aerobic process resulting in the formation of other molecules.

Answer 1

D. The protein will be chemically broken down (digested and deaminated) and its components enter aerobic cellular respiration, producing other molecules (ATP, CO2, H2O, and nitrogen waste such as urea).