Some bacteria can use sulfur instead of oxygen as a final electron acceptor. What would they produce during anaerobic respiration?
A. H2O
B. H2S
C. O2
D. S2
Answer: B
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Four of the five answers are reasons that Africanized honeybees are more dangerous than European honeybees. Select the exception
a. Africanized honeybees have more potent venom. b. Africanized honeybees attack in larger numbers. c. Africanized honeybees sting with less provocation. d. Africanized honeybees pursue with more persistence. e. Africanized honeybees lack a high threat threshold.
The genetic code is essentially the same for all organisms. Based on this information, one can logically assume which of the following statements to be correct?
a. A gene from an organism can theoretically be expressed by any other organism. b. All organisms have experienced convergent evolution. c. The same codons in different organisms translate into the different amino acids. d. DNA was the first genetic material. e. Different organisms have different numbers of different types of amino acids.
Reaction rates can be altered by all of the following EXCEPT
A) temperature B) concentration of water C) pH D) amount of enzyme E) amount of substrate.
Chemotherapy drugs make patients nauseous because they
A) cause fever, which can trigger nausea. B) interfere with the brain's interpretation of sensory input. C) stimulate stomach acid production. D) attack rapidly dividing cells, including those lining the digestive tract.