A good example of a positive feedback mechanism would be ________
A) enhancement of labor contractions
B) body temperature regulation
C) blood calcium level regulation
D) regulating glucose levels in the blood
Answer: A
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If the parent cells in meiosis have 60 chromosomes, how many cells will the daughter cells have?
A) 30 B) 60 C) 120 D) 20
One division of the autonomic nervous system stimulates your salivary glands to secrete a watery solution of enzymes, and the other division stimulates them to secrete mucus. Together, these secretions constitute the saliva. This is an example of which of the following?
A. A dual effect B. A sympathetic effect C. An antagonistic effect D. A cooperative effect E. A biofeedback effect
Which sequence correctly traces the steps of DNA replication?
(1) Weak bonds between nitrogenous bases of the DNA are disrupted. (2) DNA strands unwind. (3) DNA polymerase binds to exposed nitrogenous bases. (4) Ligases link together short complementary chains of nucleotides. (5) Nitrogenous bases of the DNA strand attract complementary nucleotides. A) 1, 2, 3, 5, 4 B) 1, 2, 3, 4, 5 C) 5, 4, 3, 2, 1 D) 4, 2, 3, 1, 5 E) 1, 3, 5, 2, 4
The afferent division of the nervous system is also known as the ________ division.
A. motor B. ganglial C. cranial D. efferent E. sensory