Which organ is part of more than one organ system?
a. stomach
b. liver
c. pancreas
d. intestine
e. brain
ANSWER: c
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The adrenal glands are closest to what organ(s)?
a. brain b. pancreas c. testes/ovaries d. thymus e. kidneys
Keratins are structural proteins in skin, hair, and fingernails. One gene, called KRT10, is located on the 17th paired chromosome in humans. It produces a keratin that strengthens skin cells. Researchers have identified several mutations that can lead to rough, damaged, blistering skin because the keratins are not as strong as normal. Each mutation changes a specific amino acid at a particular location in the protein, and so is an example of a(n) mutation.
A. missense B. duplication C. insertion D. nonsense E. frameshift
By the year 1980, a wolf species (Canis rufus) once common to the southeastern region of the United States disappeared from all areas except for one small part of eastern Texas. This is an example of
A) extirpation. B) extinction. C) species invasion. D) genetic diversity.
The two body forms of some radiates is an example of alternation of generations.
Answer the following statement true (T) or false (F)