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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The three biological stages of development during pregnancy are preembryonic, _________, and fetal.
Fill in the blank(s) with the appropriate word(s).
A human cell that has 47 chromosomes is
A. polyploid. B. trisomic. C. monosomic. D. euploid.
The cells that secrete fibers and matrix that create bone tissue are known as ________.
A. osteoblasts B. osteocytes C. osteons D. chondrocytes
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.