The major microtubule-organizing center in most animal cells is the
a. kinetochore.
b. centriole.
c. centrosome.
d. centromere.
e. kinetosome.
Ans: c. centrosome.
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The secondary immune response occurs when memory cells are activated by a second exposure to
A) hormones. B) antibodies. C) antigens. D) macrophages.
The major site of gas exchange in the lungs is the ____
a. bronchi b. bronchioles c. larynx d. alveoli e. respiratory bronchioles
Discuss theories regarding the origins of viruses and make a case for whether viruses originated before cellular life-forms or after cellular life-forms.
What will be an ideal response?
Which is incorrect about rabies?
A. Transmission can involve bites, scratches, and inhalation. B. Symptoms include anxiety, agitation, muscle spasms, convulsions, and paralysis. C. Wild populations of bats, skunks, raccoons, cats, and canines are primary reservoirs. D. It is a zoonotic disease. E. The average incubation in human is one week.