Question

Upon absorption into an intestinal cell, zinc has two options:

a) Binding to red blood cells
b) Binding to calcium
c) Binding to metallothionein
d) Binding to cholesterol

Answer 1

Zinc, upon absorption into an intestinal cell, can bind to metallothionein or other proteins to regulate zinc levels and perform specific functions.

Step-by-step explanation:

Zinc, upon absorption into an intestinal cell, has multiple options for binding. It can bind to metallothionein, a protein that plays a role in zinc metabolism and storage. This binding helps to regulate zinc levels in the body and ensure its availability when needed. Zinc can also bind to other proteins, such as enzymes, to perform specific biological functions.