The large vessels that carry blood to the heart are
A. arteries.
B. veins.
C. capillaries.
D. lymph vessels.
E. sieve tubes.
Veins carry blood to the heart
B. veins.
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Molecular clocks are based primarily on rates of
A. neutral mutations. B. favorable mutations. C. detrimental mutations. D. natural selection. E. phylogenetic trees.
The hindbrain includes the
a. thalamus. b. pineal gland. c. cerebellum. d. medulla oblongata. e. cerebellum and medulla oblongata.
The letter “A” in the above figure represents
a. keratin-filled, dead epithelial cells. b. replicating epithelium. c. mucus produced by underlying ciliated cells. d. white blood cells attacking a bacterial cell. e. all of these.
The bones of the hand that are similar to the tarsals in the foot are the ____________________. Fill in the blank(s) with the appropriate word(s)