Sex cells are called _______________
A.
gametes
B.
sperm
C.
eggs
D.
zygotes
E.
chromosomes
A
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________ transport(s) oxygen and CO2 in the RBCs
A) Ribosomes B) Mitochondria C) DNA D) Hemoglobin molecules E) Components of the cytoskeleton
Myelinated fibers (tracts) form ________ matter while unmyelinated fibers form ________ matter
A) sensory; motor B) gray; white C) motor; sensory D) white; gray
In the cross-bridge cycle, the power stroke of myosin is immediately preceded by which of the following events?
A) The hydrolysis of ATP B) Binding the actin C) Releasing Pi D) Binding new ATP
Which of the following is false?
A. Melatonin makes us feel alert and awake. B. The pineal gland is found within the diencephalon of the brain. C. The pineal gland secretes melatonin in a cyclical fashion. D. The pineal gland forms part of the epithalamus.