The zona fasciculata of the adrenal glands secretes the hormone ________.
A. aldosterone
B. epinephrine
C. ADH
D. androstenedione
E. cortisol
Answer: E
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Which of the following are limitations of DNA polymerase?
It can only add bases to the exposed 3' end of a pre-existing strand. It can only replicate the leading strand. It can only replicate the lagging strand. None of the choices are correct.
Blood glucose concentration rises after a meal and stimulates the pancreas to release the hormone insulin. Insulin travels in the blood and stimulates the uptake of glucose by body cells from the bloodstream, thus reducing blood glucose concentration. This is an example of ________.
A. set point adjustment B. positive feedback C. negative feedback D. dynamic equilibrium E. integration control
Lymphocytes are educated within primary lymphoid organs. B cells are educated in the _______ while T cells are educated in the ________.
A. bone marrow; thymus B. thymus; bone marrow C. bone marrow; bone marrow D. thymus; thymus
What does enzyme specificity mean?
A) Enzymes do not change or degrade after a reaction. B) An enzyme is able to speed up several different chemical reactions C) Enzymes can only bind to one type or shape of substrate . D) Enzymes require a specific temperature and pH for optimum activity