Of what substance are intervertebral disks
made?
a. smooth muscle
b. cartilage
c. ligaments
d. loose connective tissue
e. epithelial tissue
B
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Which of the following endocrine organs and hormones are not paired correctly?
A. anterior pituitary gland: vasopressin B. posterior pituitary gland: oxytocin C. hypothalamus: releasing factors D. anterior pituitary gland: growth hormone E. posterior pituitary gland: antidiuretic hormone
Your liver produces 90% of the cholesterol found in your body. When cholesterol levels get too high, the first enzyme in the pathway of cholesterol synthesis is inhibited. This is an example of:
A. Denaturation B. Equilibrium C. Feedback inhibition D. A coenzyme E. Positive feedback
In meiosis, centromeres split in
A. telophase I. B. anaphase I. C. telophase II. D. anaphase II.
Which of the following is a true statement concerning sexual selection?
a. Intrasexual selection leads to the death of many males in combat with other males. b. Showy secondary sexual characteristics cannot be explained by natural selection. c. Sexual selection can result in sexual dimorphism. d. In most vertebrates, females court the males. e. There is no evidence that intrasexual selection takes place between females.