Increasing the temperature of the human scrotum by 2°C (that is, near the normal body core temperature) and holding it there would most likely_____
A) reduce the fertility of the man by impairing the production of gonadal steroid hormones
B) reduce the fertility of the man by impairing spermatogenesis
C) reduce the man's sexual interest
D) increase the fertility of the affected man by enhancing the rate of steroidogenesis
B
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An antiseptic (or germicide) is distinguished from other sterilizing compounds by
A) being able to inhibit growth of microorganisms but not necessarily kill all of them. B) being able to be used on living tissues without harm. C) its ability to protect from subsequent microbial infectionsâ€"not just initial sterilization. D) killing all bacteria and microscopic fungi but not being effective against viruses.
Diploid stage(s) is(are) indicated by
a. A. b. B. c. C. d. D. e. B, C, and D.
Epithelial cell shapes and arrangements include: (check all that apply)
A. rod-shaped. B. columnar. C. transitional. D. symmetric. E. stratified.
Cyanobacteria are so named because many species have a blue-green appearance caused by the photosynthetic pigment phycocyanin.
Answer the following statement true (T) or false (F)