Which statement regarding compound eyes is true?
A) They have one light-focusing lens.
B) They are poor motion detectors.
C) They can provide excellent color vision.
D) They can perceive only visible light.
Answer: C
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Which organism contains an endoskeleton?
a. Crabs b. Earthworms c. Clams d. Snakes e. Sea anemone
After birth, which hormone causes the uterus to "shrink" and also causes the mother's breast tissue to contract forcing
milk into the ducts? a. estrogen b. prolactin c. progesterone d. oxytocin e. HCG
Which of the following defense cells are able to squeeze through the intact walls of capillaries into the tissues to attack and ingest invading microbes?
A) B cells B) Lymphocytes C) Phagocytes D) Mast cells E) Natural killer cells
Anthrax is
A. a disease that, in humans, can cause a rapidly fatal toxemia and septicemia. B. a zoonosis. C. transmitted by contact, inhalation, and ingestion. D. only seen sporadically in the United States. E. All of these choices are correct.