Consider the Hershey-Chase experiment. Is their choice of a bacteriophage unusual?
What will be an ideal response?
ANSWER: At first glance, it is very unusual. Viruses are not considered to be alive, so using a non-living
entity to establish that nucleic acids are the genetic material of life is unusual. On the other
hand, it was established that viruses used the host cell genetic machinery to replicate
themselves, and thus it could be safely assumed their genetic material must resemble the
hosts.
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Studies show that ______ is the optimal amount of stress that people need to positively promote their health and sense of well-being, which coincides with _____ theory.
a. intensity; cognitive consistency b. distress; biological instinct c. eustress; arousal d. eustress; Maslow’s
All of the following are fat-soluble vitamins found in meat EXCEPT
A) D B) B C) K D) A
The name given to rat-bite fever when the illness is acquired by the ingestion of the bacterium is:
a. sodoku. b. Haverhill fever. c. monillic fever. d. monillic gastritis.
A population of fruit flies is maintained at 4,000 individuals for t generations. During the 11th generation, the professor in charge of the flies forgot to by fly food and only 100 flies survived. What is the effective population size of this population?
What will be an ideal response?