Cells that process antigen and present antigens to other immune cells are called ________ cells.
A. antigen-presenting
B. plasma
C. T suppressor
D. B receptor
Answer: A
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In polypeptides, what type of bond holds amino acids together?
a. hemoglobin b. protein bonds c. peptide bonds d. hydrogen bonds e. enzymes
Isotopes have the same ________ number, but a different ________ number.
mass; atomic neutron; mass atomic; mass atomic; proton
Which of the following statements regarding glands of the male reproductive system is false?
A. The seminal vesicles are sac-shaped glands located next to the ampullae of the ductus deferentia. B. The bulbourethral glands enter the spongy urethra at the base of the penis. C. The prostate gland surrounds the prostatic urethra and ejaculatory ducts. D. The seminal vesicles open into the membranous urethra. E. The prostate gland contains smooth muscle partitions covered with columnar epithelium.
Eighty-year old Mrs. Smith has a bent-over stance with a noticeable hump back. Along with osteoporosis, Mrs. Smith also is afflicted with which condition?
A. lordosis B. kyphosis C. scoliosis D. spina bifida E. herniated disk