Regulatory T cells act to
A) inhibit T and B cell activities.
B) erase memory T cells.
C) limit antigen proliferation.
D) suppress antigens.
E) produce antibodies involved in autoimmunity.
Answer: D
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On a four-legged animal, inferior refers to ________
A) cephalic B) dorsal C) ventral D) caudal
Typically, about fifty-five percent of blood is
A. blood cells. B. formed elements. C. plasma. D. organic molecules.
Which of the following are true regarding evolution of the human forelimbs for bipedalism? Select all that apply.
A. The hands are better adapted for handling objects. B. The shoulder joint has less mobility than the hip joint. C. They are shorter than the hindlimbs. D. They are less muscular than the hindlimbs.
Answer the following statements true (T) or false (F)
1. The end product of amylase digestion is glucose. 2. Lactose intolerance is caused by the inability of the pancreas to produce the proper amount of lactase. 3. The most abundant end product of carbohydrate digestion is glucose. 4. Protein digestion begins in the mouth. 5. In the stomach, hydrochloric acid converts pepsin to trypsin.