Cell division is stimulated by ______________ and suppressed by _______________.
a) cell number; growth factors
b) contact inhibition; cytokinesis
c) cell size; contact inhibition
d) growth factors; contact inhibition
d) growth factors; contact inhibition
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What is the purpose of the triad?
A) The triad synthesizes ATP. B) The triad allows for Ca2+ release when a muscle fiber is excited. C) The triad maintains the resting membrane potential. D) The triad stores sodium. E) The triad removes acetylcholine from the synaptic cleft.
The three biological stages of development during pregnancy are preembryonic, _________, and fetal.
Fill in the blank(s) with the appropriate word(s).
The cells that secrete fibers and matrix that create bone tissue are known as ________.
A. osteoblasts B. osteocytes C. osteons D. chondrocytes
A human cell that has 47 chromosomes is
A. polyploid. B. trisomic. C. monosomic. D. euploid.