The movement of materials from the lumen to the blood or lymph is ____
a. motility
b. secretion
c. digestion
d. absorption
e. elimination
ANSWER: d
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The size of the cerebellum in an animal correlates to:
a. the amount of communication between the ventricles and the hindbrain. b. the size of that animal. c. the intelligence of that animal. d. the complexity of muscular activity exhibited by that animal. e. the animal's ability to smell.
Approximately 10—15% of insect species harbor bacteria that make needed nutrients available to the insects. How might you classify these bacteria?
A) phytoplankton B) extremophiles C) exotoxins D) endosymbionts
Gene frequencies will NOT change in a population if certain conditions are met, such as if
A. all organisms mate randomly. B. there is no migration. C. there is no mutation. D. All of these answers are true.
The portion of the Y chromosome that determines male gender is known as ________.
What will be an ideal response?