The nucleus is to eukaryotes as the ________ is to prokaryotes.
A. pili
B. glycocalyx
C. ribosome
D. nucleoid
E. cell wall
D. nucleoid
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Which of the following could use reverse transcriptase to transcribe its genome?
A) ssRNA B) dsRNA C) ssDNA D) dsDNA
In the light-independent reactions of photosynthesis, CO2 is added to a five-carbon molecule known as
A. cellulose. B. ribose. C. deoxyribose. D. RuBP. E. CAM.
Answer the following statements true (T) or false (F)
1. Juvenile hormone is a critical growth regulatory and maturity hormone in people. 2. A growth-hormone releasing hormone tumor in the brain could lead to stunted growth in children. 3. Insulin's affect on reducing blood glucose levels are counteracted by glucagon's actions, which increase blood glucose. 4. Often one is not acclimated to the cold after having moved from a warm to cooler climate. Similarly, individuals may have difficulty adjusting to the heat after having moved from a cold to warm region. This difficulty in acclimating to different temperatures most likely requires adjustments in thyroid gland activity.
Which of the following statements about cancer defense is false?
a. Natural killer and cytotoxic T cells destroy cancer cells. b. Cancer antigens stimulate a strong immune response. c. Monoclonal antibodies can deliver toxic drugs to cancer cells. d. T cells produce interleukins, which defend against cancer. e. Macrophages produce tumor necrosis factor, which inhibits tumor growth.