Which of the following is not a component of innate immunity?
a. inflammation
b. antibody production
c. interferon
d. natural killer cells
e. the complement system
B
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The erythrocyte count increases after a while when an individual goes from a low to a high altitude because the ________.
A) temperature is lower at higher altitudes B) basal metabolic rate is higher at high altitudes C) concentration of oxygen and/or total atmospheric pressure is higher at higher altitudes D) concentration of oxygen and/or total atmospheric pressure is lower at high altitudes
List the five major classes of antibodies. Which one is the most prevalent in the body?
What will be an ideal response?
A researcher engineers a deletion in the genome of sperm cell DNA that inhibits production of an enzyme in the sperm cell membrane. The researcher then adds the sperm to a culture dish with a secondary oocyte, along with chemicals to guide the sperm to the oocyte. Upon observation, it is found that the sperm fails to penetrate the corona radiata of the oocyte. What enzyme has been deleted from the sperm membrane?
A. Juno B. Catalase C. Acetylcholinesterase D. Hyaluronidase
How is an action potential created?
A. The flow of potassium across the sarcolemma B. The hydrolysis if ATP C. The flow of sodium across the sarcolemma D. The flow of calcium across the sarcolemma