Transamination results in an ammonia-containing product that can be eliminated by the kidneys in the urine called:
A) bicarbonate ion. B) urea. C) creatinine. D) bilirubin.
Answer: B
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Which blood vessel carries blood from the left ventricle?
A. aorta B. right atrium C. pulmonary trunk D. pulmonary arteries E. pulmonary veins
Which of the following is the last step in the process of fertilization?
A. A sperm fuses with the egg's plasma membrane. B. The capacitated sperm release their acrosomal enzymes to penetrate through the cells surrounding the egg. C. The sperm nucleus enters the egg, and the egg immediately prevents any further sperm from gaining access by forming a fertilization membrane that a sperm cannot penetrate. D. The nuclei of the sperm and egg rupture within the fertilized egg and the chromosomes mix to form a single nucleus.
Actin has an ATPase enzyme.
Answer the following statement true (T) or false (F)
Mucous, sweat gland secretions, hairs, and sebaceous secretions all contribute to the effectiveness of which type of innate defense?
a. interferons b. pyrogens c. physical barriers d. complement