If you eliminated all sources of calcium (dairy products, some vegetables) from your diet, the level of
which of the following would rise in an attempt to supply calcium stored in your body to the tissues
that need it?
a. aldosterone
b. calcitonin
c. mineralocorticoids
d. parathyroid hormone
e. angiotensin
D
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In the Tewsbury and Nabhan study, which animals were observed most likely to eat the hot peppers?
A. cactus mice B. pack rats and thrashers C. thrashers. D. Cactus mice, pack rats, and thrashers all ate the peppers equally. E. pack rats
Which plant body part includes the sieve tube members?
a. ground tissue b. dermal tissue c. meristem d. phloem
Yellow-seeded pea plants may be homozygous or heterozygous. To find out which, cross the plants with
A) true-breeding green-seeded plants. B) heterozygous green-seeded plants. C) the same genotype. D) true-breeding yellow-seeded plants. E) heterozygous yellow-seeded plants.
What changes occur in the endometrium as the time of possible fertilization approaches?
A) The endometrium secretes estrogen. B) The endometrium enters the secretory phase. C) The endometrium enters the proliferative phase. D) Menstruation occurs.