Simple Goiter

question 82

Multiple Choice

Simple goiter

• A)is due to lack of iodine.
• B)is due to high levels of thyroxine in the blood.
• C)is an enlargement of the thymus gland.
• D)is described by all of these characteristics.

---

Definitions:

Nobel Prize In Chemistry

An annual award recognizing outstanding contributions to the field of chemistry, one of the Nobel Prizes established by the will of Alfred Nobel.

RNA Enzyme

Also known as a ribozyme, a type of RNA molecule that can catalyze specific biochemical reactions, similar to the action of protein enzymes.

Substrate

The surface or material on or from which an organism lives, grows, or obtains its nourishment, or the reactant upon which an enzyme acts.

RNA Hypothesis

A scientific theory suggesting that RNA, rather than DNA, was the first genetic material to evolve in early life forms.