Which of the following is NOT true after a man has had a vasectomy?
A. The vas deferens still transports sperm to the urethra.
B. The interstitial cells can still release hormones.
C. The uterine tube will not be affected.
D. The semen will not contain sperm.
E. Bulbourethral glands are not affected by the operation.
Answer: A
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Based on what the chapter describes about the melting temperature of fatty acids, which of the following would be likely to increase the stability of a lipid bilayer?
A. an increase in unsaturated fatty acids B. an increase in saturated fatty acids C. a decrease in overall tail length D. an increase in unsaturated fatty acids and an increase in saturated fatty acids E. an increase in saturated fatty acids, and a decrease in overall tail length
These protists are intermediate in what sense?
A) They reproduce by binary fission in their early stages of development and by mitosis when they are mature. B) They use mitotic division but only have circular chromosomes. C) They maintain a nuclear envelope during division. D) None of them form spindles.
Fibrous connective tissue repair is defined as:
a. scar formation b. primary union c. regeneration d. mitotic cellular repair
Why does a heart attack radiate pain in the left shoulder and arm?
A. The heart will close off the blood supply to the arteries that supply the left arm, leading to the pain. B. Damage to the heart muscle results in a flood of inflammatory products carried by the blood stream to the left shoulder and arm first. C. The left shoulder and arm are the first to lose their blood supply and begin to hurt. D. The nerves that innervate the heart go through the left shoulder and arm before going to the spinal cord. E. Sometimes, stimulation of internal pain receptors is felt as pain from the skin.