All of the following are functions of the circulatory system except
A. oxygen, nutrient, and waste transport.
B. blood clotting and immune defense.
C. creation of red and white blood cells.
D. hormone transport.
E. temperature regulation.
Answer: C
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Which of the following statements is true about chemical elements in an ecosystem?
Antiparallelism means that
A) the two strands of a DNA molecule run in opposite directions. B) the DNA double helix twists first one way, then the other. C) the DNA bases are sometimes on the outside of the molecule. D) the DNA molecule cannot dissolve in water.
____ is the study of body plans and structures
among groups of organisms. a. Embryology b. Molecular archeology c. Evolution d. Comparative morphology e. Composition
Anaerobic exercise affects muscle cells by
a. increasing the number of mitochondria. b. increasing the size of mitochondria. c. increasing the number of capillaries supplying muscle tissue. d. increasing nourishment to the cells and waste removal from the cells. e. producing ATP without oxygen.