Epiphysis and diaphysis of bone is

The correct option is A

End and shaft of long bone respectively

The correct option is : A

The explanation of the correct option:

1. The epiphysis is the expanded or rounded end portion of a long bone. It has red bone marrow-producing erythrocytes.
2. The diaphysis is the shaft portion of a long bone with cortical tissue. It has bone marrow and adipose tissue.

The explanation of the incorrect options:

Option B:

Proteins consist of long chains of amino acids called polypeptides and have an end with an unbound carboxyl group, the C-terminus, and an unbound amine group, the N-terminus.

Option C:

The head of a bone means the distal end of the bone, and the metaphysis is the neck portion of a long bone.

Option D:

Spongy bone is a type of bone tissue. It occurs at the ends of long bones, in the pelvic bones, ribs, skulls, etc.

Final Answer: Epiphysis and diaphysis of bone are the end and shaft of long bone respectively.