What is the effect of hormones secreted by the thymus gland?
A.
These hormones stimulate growth.
B.
These hormones lower blood calcium levels.
C.
These hormones increase blood calcium levels.
D.
These hormones increase blood glucose levels.
E.
These hormones stimulate the development of the immune system.
E
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Which of the following statements about pancreatic enzymes is FALSE?
A. Pancreatic lipase digests fats. B. Pancreatic amylase digests carbohydrates. C. Trypsinogen is secreted in an inactive form. D. Trypsinogen is activated by enterokinase. E. Except for trypsinogen, other proteolytic enzymes are secreted in active form.
Which of the following activates the cytotoxic T cells?
A) interferon B) interleukin-1 C) interleukin-2 D) interleukin-4
Rami, trochanters, tubercles, and tuberosities are bone markings that serve as
A. attachments for ligaments or tendons. B. articulating surfaces. C. passageways for blood vessels. D. passageways for nerves. E. pits or depressions to hold cartilage.
Gametes are called haploid because
A) they are produced by the process of mitosis. B) they are either sperm or ova. C) they contain one-half the normal number of chromosomes. D) there are half as many of them produced at each division in comparison with diploid cells. E) All of the answers are correct.