The process illustrated in the accompanying figure is called:
a. peristalsis.
b. hydrolysis.
c. emulsification.
d. proteolysis.
e. diffusion.
c
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The __________ __________ model assumes that evolution occurs in spurts, between which there are long periods of stasis with little evolutionary change.
Fill in the blank(s) with the appropriate word(s).
The appendix is a vestigial structure in humans
Indicate whether the statement is true or false.
If DNA directs the production of RNA, what does RNA make?
A. RNA makes proteins. B. RNA makes more DNA. C. RNA makes more RNA. D. RNA makes membranes.
Oxygen-rich blood flows through the heart
A) by entering the right atrium and continuing through the aortic arch. B) via the left atrium and ventricle before entering the systemic circuit. C) on the left side of the heart following returning from the lungs via the pulmonary arteries. D) right to left. E) only through the coronary arteries.