The point where light rays cross after passing through a concave lens is referred to as the ________.
A. far point of vision
B. near point of vision
C. depth of focus
D. focal point
Answer: D
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A two-way gut system (i.e., gastrovascular cavity) is a characteristic of
A) Platyhelminths. B) Annelids. C) Arthropods. D) Molluscs.
Brown fat
A) is innervated by the sympathetic nervous system. B) contains a rich vascular supply. C) functions in nonshivering thermogenesis. D) is found in infants. E) All of these answers are correct.
The currently fashionable "low rise" jeans may expose (the)
A) inguinal canal. B) inguinal ligament. C) posterior superior iliac spine. D) anterior superior iliac spine. E) All of the answers are correct.
If someone steps on a sharp object with their right foot, it will lead to
A. polysynaptic reflexes involving contraction of the right quadriceps and left hamstrings. B. a monosynaptic reflex causing contraction of the right quadriceps and a polysynaptic reflex causing contraction of the the left hamstring. C. a monosynaptic reflex causing contraction of the right hamstring and a polysynaptic reflex causing contraction of the left hamstring. D. polysynaptic reflexes involving contraction of the right hamstring and left quadriceps.