Portions of pre-mRNA that do NOT code for parts of a protein are called ________.
A. Introns, start codons, and stop codons code for parts of a protein.
B. start codons
C. exons
D. stop codons
E. introns
Answer: A
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Which of the following allows muscles to return to their original shape during relaxation?
A) gravity B) opposing muscle contractions C) elastic forces D) myosin binding E) gravity, opposing muscle contractions, and elastic forces
Aldosterone secretion
a. occurs in the kidney b. is stimulated by angiotensin II c. is controlled by the concentration of Cl- d. increases due to a higher-than-normal Na+ concentration in the blood e. allows renin to become activated
Mineralocorticoids such as aldosterone are produced primarily in the ____ of the adrenal gland
a. zona glomerulosa b. zona fasciculata c. zona reticularis d. adrenal medulla e. chromaffin cells
In the appendicular region, the wrist is called the ________ region, and the ankle is called the ________ region.
A. crural; antebrachial B. manual; pedal C. brachial; crural D. metacarpal; metatarsal E. carpal; tarsal