The first law of thermodynamics states that ________________________
A. combustion engines are 100% efficient
B. energy cannot be created or destroyed
C. only eukaryotic cells can produce ATP
D. there is an increase in disorder in the
universe over time
E. the universe becomes more orderly over
time
Answer Key: B
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a. Platyhelminthes b. Nematoda c. Porifera d. Annelids e. Planarians
Which blood type is the universal donor?
a. A b. B c. AB d. O e. none of these
Labeling.
?
?
Figure 31.14
A. hair B. duct of sweat gland C. blood vessels D. smooth muscle E. sweat gland F. hair follicle G. sebaceous gland H. hypodermis I. dermis J. epidermis
Which outcome would be the most likely if androgen receptors on cells in the hypothalamus and anterior pituitary suddenly could not bind androgen?
A) Sperm production would increase. B) Sperm production would decrease. C) FSH production would decrease. D) HCG production would increase.