The volcanic island Selkirk arose from the North Atlantic off Iceland in 1948. The first organisms to start living there are said to be ________
A) central species
B) climax species
C) pioneer species
D) rogue organisms
C
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Ligation reactions occur most efficiently between DNA fragments:
A. that have sticky ends. B. that have blunt ends. C. that have complementary sticky ends. D. that are cleaved with different restriction enzymes. E. where one fragment has a sticky end and the other has a blunt end.
In the case of phage lambda, termination of lysogeny and entry into the lytic cycle usually occurs in response to environmental damage to the host DNA.
Answer the following statement true (T) or false (F)
At which neuronal structure does summation occur?
a. dendrites b. cell body c. axon hillock d. Schwann cells e. axon terminals
Which of the following rRNA molecules is not associated with the large subunit of the eukaryotic ribosome?
A) 28S B) 5.8S C) 5S D) 16S E) Neither 5.8S nor 5S rRNA is associated with the large subunit.