Which of these viral cytopathic effects is most likely to be associated with the development of cancer?
A) inclusion bodies
B) cell death
C) loss of contact inhibition
D) stimulation of interferon E_ production
E) cell fusion
Ans: C) loss of contact inhibition
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Which of the following correctly matches a component of the cytoskeleton to one of its functions?
A) microfilaments form the nuclear lamina B) microtubules help animal cells divide in two C) microfilaments cause ciliary bending D) intermediate filaments contribute to cytoplasmic streaming E) microtubules move chromosomes
An increase in the size of the ozone hole would be expected to _____
a. increase skin cancers b. reduce respiratory disorders c. both a and b
The _____ is associated with seasonal affective disorder (SAD)
a. pineal b. pituitary c. thyroid d. parathyroid e. thymus
Tomato seeds are often consumed by birds or other organisms and then deposited through feces. However, when tomatoes rot on the vine, organisms may not consume them. How would tomato seeds likely disperse in this situation?
A) When the tomato rots, it drops to the ground and the seeds fall in the soil. B) Summer rains carry the seeds to a new area. C) Windy conditions carry the seeds to a new area. D) The tomato disperses its seeds as spores.