Which disorder results from insufficient red blood cells or hemoglobin to carry enough oxygen to maintain homeostasis?
A. Hemophilia
B. Anemia
C. Thrombocytopenia
D. Polycythemia
Answer: B
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Which of the following describes the plasma membrane?
A) a single-layered membrane that surrounds the nucleus of the cell B) a double layer of protein enclosing the plasma C) the phospholipid bilayer surrounding the cell D) a membrane composed of tiny shelves or cristae
Wrinkles in the skin can be caused by
A) collagen disorders. B) increasing age. C) changes in levels of hormones. D) the cumulative effects of ultraviolet radiation. E) All of the answers are correct.
The appointment schedule should be completed in blue or black ink
Indicate whether the statement is true or false
Most people retain adequate kidney function in old age. Why?
A. Decreased activity in old age leads to a decrease in production of toxins. B. Glomeruli grow new blood vessels through life. C. Nephrons use blood more efficiently. D. Older people drink less fluid and therefore have less need to produce urine. E. A loss of nephrons does not radically impair function because there are so many to begin with.