Which of the following is least likely to be a cause of
extinction?
a. asteroid impact
b. human activity
c. adaptive radiation
d. tectonic activity
e. climate change
Answer: c
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Trace a drop of blood from the right atrium through the entire circulatory system then back to the right atrium. Include
in your answer major heart structures and vessels. What will be an ideal response?
Which of the following statements about drugs that competitively inhibit DNA polymerase or RNA polymerase is FALSE?
A) They can potentially cause mutations.
B) They are used against viral infections.
C) They can affect host cell DNA synthesis.
D) They cause cellular plasmolysis.
E) They interfere with protein synthesis.
Which of the following is currently used by the U.S. Department of Justice as a form of genetic "fingerprints" of criminals?
A) PCRs B) The genes responsible for producing the unique patterns of swirls and loops on a person's fingers C) STRs D) Plasmids E) The number of introns in a chromosome
A substance that can elicit an immune response is called a(n)...
What will be an ideal response?