-Small, volatile chemicals that may act as mate attractants are? a.)hormones b.)
ID: 16962 • Letter: #
Question
-Small, volatile chemicals that may act as mate attractants are?a.)hormones
b.)pheromones
c.)glucagon
d.)insulin
e.)pepsin
Which statement is not true about the menstrual cycle?
a.)Then menstrual cycle cycle occurs i sexually mature human females.
b.)The endometrium is shed from the uterus out of the body.
c.)The endometrium is reabsorbed by the uterus.
d.)A human female's menstrual cycle continues from puberty throughout life until menopause.
e.)The human menstrual cycle allows human females to be receptive to mating at any time.
Which of the following is not true of spermatogenesis?
a.)Four sperm cells are produced from every spermatogonium.
b.)Diploid sperm cells result from meiosis and maturation.
c.)The time required for production of mature sperm is a few months.
d.)Cells from which sperm are produced continue to divide by mitosis throughout a male's life, and thus a man can continue to produce sperm throughout life.
Explanation / Answer
Hormones do not act as mate attractants; they act within the body not outside it. Despite what others have said in their posts, the correct answer to #1 is (b) pheromones. Also meiosis never results in diploid cells; therefore (b) for #3 is your answer, not (c), as others have posted. 1. (b) 2. (c). The endometrium is shed via menstrual bleeding; it is never reabsorbed (imagine how much money companies like Kotex would lose if the endometrium were reabsorbed) 3. (b). Meiosis, unlike mitosis, takes a diploid cell (with 46 chromosomes) and creates haploid cells (with 23 chromosomes); It NEVER results in diploid cells. Therefore (b) is NOT true and is your CORRECT answer. Also spermatogenesis in humans takes about 74 days (a couple of months). Therefore (c) is true and is NOT the correct answer. Hope this helps
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