Which of the following infectious organisms is the smallest?
A.) Viroid
B.) Prion
C.) Virus
D.) Bacteria
Ans: B.) Prion
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Damage to the cerebellum could result in
A. decreased ability to balance. B. loss of hearing. C. loss of vision. D. loss of taste sensation. E. diminished thermoreceptive sensation.
The spindle apparatus becomes visible during
a. anaphase. b. metaphase. c. interphase. d. prophase. e. telophase.
A sponge body type consisting of one spongocoel having many folds is called:
a. asconoid. b. syconoid. c. leuconoid. d. hexactinellida. e. demospongoid.
By transferring neural crest cells from a duck to a quail and vice versa, Schneider and Helms demonstrated that:
a. neural crest cells influence the development of beaks. b. beaks influence fitness traits. c. homeobox genes are conserved across species. d. gene duplication causes a difference in beak shape.