A ?COOH group is a(n) ____ group
a. carboxyl
b. hydroxyl
c. amine
d. methyl
e. carbonyl
a
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Select the correct pair of statements about FSH and LH function.
A. In males, FSH stimulates spermatogenesis and LH stimulates Leydig cells to secrete testosterone. In females, FSH stimulates growth of follicles and LH stimulates ovulation and development of the corpus luteum. B. In males, FSH stimulates spermatogenesis and LH stimulates Leydig cells to secrete testosterone. In females, FSH stimulates ovulation and development of the corpus luteum and LH stimulates growth of follicles. C. In males, FSH stimulates Leydig cells to secrete testosterone and LH stimulates spermatogenesis. In females, FSH stimulates growth of follicles and LH stimulates ovulation and development of the corpus luteum. D. In males, FSH stimulates Leydig cells to secrete testosterone and LH stimulates spermatogenesis. In females, FSH stimulates ovulation and development of the corpus luteum and LH stimulates growth of follicles.
Orgasm is necessary for
a. ejaculation of semen. b. pregnancy. c. erection. d. sexual arousal. e. all of these.
Which of the following statements about the female sexual cycle is FALSE?
a) It is controlled primarily by a spinal cord reflex b) The parasympathetic nervous system causes lubrication of the vagina c) The sympathetic nervous system causes vasodilatation of the vagina and clitoris d) Both a and b are false e) Both b and c are false
Cystic fibrosis (CF) is caused by a recessive allele. A child has CF, even though neither of his parents has CF. This couple also has a child who does not have CF. What is the probability the unaffected child is heterozygous?
A) 1/4 B) 1/3 C) 2/3 D) 1/2 E) 3/4