A swimmer sees a large blue jellyfish nearby. Jellyfishes are known to sting, so the swimmer moves away. The swimmer did which of the following?
A) Used inductive reasoning
B) Used deductive reasoning
C) Constructed a theory
D) Tested a hypothesis
B) Used deductive reasoning
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How do altruistic behaviors arise through natural selection?
A) By his/her actions, the altruist increases the likelihood that some of its genes will be passed on to the next generation. B) The altruist is appreciated by other members of the population because its survivability has been enhanced by virtue of its risky behavior. C) Animals that perform altruistic acts are allowed by their population to breed more, thereby passing on their behavior genes to future generations. D) Altruistic behaviors lower stress in populations, which increases the survivability of all the members of the population.
Which of the following processes does notcontribute to the formation of a biologically active form of a protein?
A. posttranslational modification of amino acids B. degradation of mRNA C. removal of one or more amino acid residues D. formation of intrachain or interchain disulfide bonds
To maintain a balanced water cycle, what needs to occur?
a. irrigation for agriculture must stop b. water withdrawals cannot exceed replenishment c. per-capita consumption must decrease d. per-capita consumption must increase e. water withdrawals must exceed replenishment
What kind of bacterial variant would be most likely to survive in the human digestive system?
A) a variant that thrives at temperatures close to 100°C B) a variant with a coating that is resistant to an acidic environment C) a variant that reproduces slowly D) a variant that easily attaches to hard surfaces