All of the following are correct regarding DNA except
A) it contains deoxyribose sugar.
B) molecular shape varies with hydrogen bonding along the length of the strand.
C) the nitrogenous base is made of adenine, guanine, cytosine, and thymine.
D) it stores genetic information.
E) it contains a double helix.
Answer: B
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What type of cutaneous receptor would be the first to respond to a touch that barely contacts the skin of the forearm?
A. Ruffini ending B. Meissner corpuscle C. Root hair plexus D. Pacinian corpusle
Dual innervation refers to situations in which
A) vital organs receive instructions from both sympathetic and parasympathetic fibers. B) sympathetic and parasympathetic fibers have excitatory and inhibitory actions. C) the atria and ventricles of the heart receive innervation from the same nerve. D) sympathetic and parasympathetic fibers cause the same effect. E) All of the answers are correct.
This flap of elastic cartilage forms a lid over the larynx and prevents food from entering it during swallowing
A) cuneiform B) thyroid C) cricoid D) epiglottis
The hypothalamohypophysial portal system carries hormones from the
A. anterior pituitary to the hypothalamus. B. posterior pituitary to the hypothalamus. C. hypothalamus to the anterior pituitary. D. hypothalamus to the posterior pituitary. E. anterior pituitary to posterior pituitary.