A human body cell that has 46 chromosomes goes through mitosis and produces two daughter cells that each have ________ chromosomes
a. 92
b. 23
c. 2
d. 46
d
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During fertilization, the acrosomal contents _____
A) block polyspermy B) help propel more sperm toward the egg C) digest the protective jelly coat on the surface of the egg D) nourish the mitochondria of the sperm E) trigger the completion of meiosis by the sperm
Anaerobic metabolism (select all correct choices):
A. occurs in the cytosol in the absence of oxygen. B. provides rapid, short-term energy. C. breaks glucose down into carbon dioxide. D. leads to the maximum possible yield of ATP in a cell. E. occurs in the mitochondria in the presence of oxygen.
Which statement about joints is true?
a. Cartilaginous joints allow for minimal movement. b. Fibrous joints are capable of the greatest movement. c. Knees and elbows are examples of cartilaginous joints d. The joints between teeth are examples of synovial joints.
In a set of classic experiments performed in the early 1950s, Urey and Miller subjected an experimental system composed of H2, CH4 (methane), and NH4 (ammonia) to electrical sparks. A few days later, they found ________________ in their system.
a. cells b. rRNA c. DNA d. tRNA e. amino acids