Which of the following techniques is similar to a molecular "copy machine" for DNA?
A. gel electrophoresis
B. restriction enzymes
C. DNA sequencing
D. polymerase chain reaction (PCR)
Answer: D. polymerase chain reaction (PCR)
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The inner mitochondrial membrane contains proteins that
a. synthesize ATP. b. pump protons. c. transport pyruvate and fatty acids. d. All of the above
Fairy shrimp are filter feeders that obtain organic particles from the water or scrape algae
from surfaces. Based on their feeding habits, fairy shrimp are __________.
a. primary consumers b. primary producers c. secondary consumers d. detritivores
To reproduce, many plants produce seeds-structures containing embryonic offspring along with nutrients inside a tough case. These offspring develop after being released by the parent plant
To which animal reproductive strategy is seed production most comparable? A) oviparous reproduction B) ovoviviparous reproduction C) viviparous reproduction
In the presence of water, nonpolar associations form between molecules or regions of molecules that
are ____.
a. partially charged b. hydrophobic and hydrophilic c. hydrophobic d. fully charged e. hydrophilic