Question

Elements

Percent by mass

1. The most abundant and considered as the key element in aerobic respiration
binding of hemoglobin to form O2 and used by the mitochondrion to produce energy.

2. The Important component of amino acids.

3. Found in bones and teeth, used to build strong structural compound muscle
contraction and protein regulation.

4. Used In nerve conduction and regulating the heartbeat.

5. Important for nerve transmission and muscle function,​

Answer 1

Answer:

q2ans The key elements of an amino acid are carbon, hydrogen, oxygen, and nitrogen. They are particularly important in biochemistry, where the term usually refers to alpha-amino acids.