If John has O positive blood, he will have which of the following antibodies in his blood?
A. Anti-Rh
B. Anti-A
C. Anti-B
D. Both anti-A and anti-B
Answer: D. Both anti-A and anti-B
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If a fair-skinned person is outside on a hot sunny day, why does his or her skin turn red?
A) The blood flow to the skin increases. B) The number of red melanocytes in the skin increases. C) Melanocytes increase production of red pigments. D) Carotene production greatly increases. E) Decreased heat causes the skin to turn red.
Which type of skin cancer is the most common?
A. Kaposi's sarcoma B. melanoma C. psoriasis D. basal cell carcinoma E. squamous cell carcinoma
Where in the body does the production of precursors for the synthesis of calcitriol occur?
A) bone B) kidneys C) small intestine D) liver E) skin
All of the chemical reactions within a cell are known as cell
A. communication. B. inheritance. C. metabolism. D. movement.