During prophase of mitosis, the
A. nucleus is preparing for the beginning stage of mitosis that will follow.
B. chromosomes are so loosely coiled and stretched out that they are not yet visible.
C. nucleoli and nuclear membrane disappear.
D. zygote is formed.
C. nucleoli and nuclear membrane disappear.
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Radiation most likely destroys cancer cells by inducing a process called
A. cytokinesis. B. protein disintegration. C. differentiation. D. apoptosis.
Which of the following statements about dehydration reactions is false?
A) One monomer loses a hydrogen atom, and the other loses a hydroxyl group. B) H2O is formed as the monomers are joined. C) Covalent bonds are formed between the monomers. D) Animal digestive systems utilize this process to break down food.
Ned is reading his newspaper by holding it at arm's length. Sandra asks him why he isn't holding it closer. He explains that he would not be able to see the print if he held it closer. Which of the following corrective measures would be the best solution
for Ned? A) concave lenses B) convex lenses C) corneal ring segments D) retinal transplants
Following exposure to sulfur mustard:
A) the patient experiences immediate intense pain, indicating rapid damage to the underlying cells and tissues. B) the patient experiences a progressive reddening of the affected area, which will gradually develop into large blisters. C) signs and symptoms typically appear within 1 to 2 minutes, reflecting rapid entry of the chemical into the bloodstream. D) the patient often develops a grayish discoloration at the contaminated site, even though secondary cellular injury does not occur.