Most neurons lack centrioles. This observation explains
A) why neurons grow such long axons.
B) why such neurons cannot divide through mitosis.
C) the conducting ability of neurons.
D) the ability of neurons to communicate with each other.
E) the longevity of neurons.
B) why such neurons cannot divide through mitosis.
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The amnion is one of the extraembryonic membranes, and its function is to
A. give the embryo nourishment. B. form the plasma portion of the blood. C. prevent desiccation of the embryo. D. permit implantation to occur. E. allow fluid to enter the placenta.
An ovulating oocyte is actually activated by hormones about ________ days before ovulation.
A) 14 B) 28 C) 85 D) 110
What is the smallest structural/functional unit capable of carrying out life processes?
a. an atom b. a molecule c. a cell d. an organ e. a specialized tissue
Which of the following is NOT likely to result in edema?
A. blockage of lymph vessels B. prolonged standing C. liver disease D. heart failure E. elevated plasma protein concentrations