You isolate a cell with the following characteristics: (1 ) no nucleus, (2 ) only a single type of organelle, and (3 ) 2 ?m in size. This cell could be a/an:
A) animal cell.
B) plant cell or an animal cell.
C) plant cell.
D) bacterial cell or a plant cell.
E) bacterium.
Answer: E
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The work of Tyndall and Cohn
A. supported the idea of spontaneous generation. B. was used to explain why others investigating spontaneous generation had obtained results that were opposite of those obtained by Pasteur. C. showed that microbes caused disease. D. allowed scientists to see microorganisms.
Does ADP contain the capacity to provide energy for the cell?
A. Yes. ADP has the same capacity to provide energy for the cell as ATP. B. Yes. Cleaving the bond between the terminal phosphate and the phosphate attached to the ribose sugar can provide energy for the cell. C. Yes. Cleaving the bond between the ribose sugar and the two phosphate groups can provide energy for the cell. D. No. ADP does not contain any bonds that can be broken to provide energy for the cell.
DNP is a chemical that has been used by people to lose weight. However, it is a dangerous option and has caused several people to die. DNP works in a fashion similar to that of brown fat. Based on this information, how would DNP cause weight loss and
death? A) DNP must prevent food from being consumed aerobically, so cells instead perform fermentation, and lactate buildup is deadly. B) DNP must increase the rate of substrate-level phosphorylation, causing NADH to be produced more quickly than it can be used by the electron transport chain. C) DNP must block cells from using fats and proteins to make ATP. D) DNP must increase metabolism of food by producing heat instead of ATP.
Habituation belongs to which of the following types of learning?
A. cognitive B. behavior modification C. nonassociative D. conditioning E. innate release