Muscles that act as opposing pairs are____
a. flexors
b. agonists
c. depressors
d. antagonists
e. extensors
ANSWER: d
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In asexual reproduction, new combinations of genes arise by
a. mutation. b. random segregation of chromosomes into gametes. c. random assortment of gametes. d. crossing over. e. new combinations of genes do not occur.
In the context of vision, what does accommodation mean?
a. lack of receptor response to continued light signal b. changing the lens shape c. moving the lens closer to or further away from the retina in order to focus the image d. keeping the lens under tension to allow for image focusing e. preventing light from scattering upon entry to the eye
All the organisms of various species living within a given area constitute a(n)
What will be an ideal response?
Bone-forming cells are called _____, while cells that dissolve bone, releasing calcium and phosphorus, are _____
osteoclasts; osteoblasts osteocytes; osteoclasts osteoblasts; osteoclasts osteoclasts; osteocytes