A researcher wants to insert a DNA fragment into a plasmid. Which enzyme will join the two DNA molecules
together?
a. primase
b. ?-galactosidase
c. restriction endonuclease
d. DNA ligase
e. DNA polymerase
ANSWER: d
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When does the cell plate form during cell division?
A. At the completion of plant cell mitosis B. At the completion of animal cell mitosis C. In the middle of animal cell mitosis D. In the middle of plant cell mitosis
Which of the following is an abiotic factor?
a. symbiotic relationships b. prey populations c. annual precipitation d. parasites
In what part of the life cycle does DNA
replication occur?
a. G1 b. G2 c. S d. prophase e. more than one of these
The chemiosmotic theory explains
A) the phosphorylation of ADP. B) the electron transport chain. C) the differences between inner and outer mitochondrial membranes. D) the source of energy for formation of mitochondrial ATP. E) aerobic respiration.