Many of the Symptoms of Vitamin a Deficiency, Such as Blindness

question 71

Multiple Choice

Many of the symptoms of vitamin A deficiency, such as blindness and an increase in respiratory infections, are related to the role of vitamin A in _____.

• A) ​blood clotting
• B) ​synthesis of visual pigment
• C) ​maintenance of epithelial cells
• D) ​synthesis of some hormones
• E) ​synthesis of nephrons

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Definitions:

Fossil Record

The accumulation of documented fossils, revealing information about past life, evolutionary processes, and the history of the earth.

Reproductively Isolated

A state in which two populations can no longer interbreed to produce fertile offspring, leading to the emergence of separate species.

Mating Behaviors

The actions or sequences of actions performed by animals as part of the courtship leading to reproduction.

Hosts

Organisms that harbor another organism (parasite, mutualistic symbiont, or commensal) providing nourishment and shelter.