Which of the following will diffuse most rapidly across membranes?
a. glucose
b. O2
c. ions
d. macromolecules
Answer: b. O2
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What interactions exist between a lion pride and a hyena pack?
A) +/+ B) +/o C) +/- D) o/o E) -/-
Examine Figure 23.2 in your textbook. If we defined a taxon to include only the extant coelacanths and lungfish but not their most recent common ancestor, it would be a _____ group
A. monophyletic B. paraphyletic C. polyphyletic
Marine algae would be considered a part of which trophic level?
A. producer B. primary consumer C. secondary consumer D. tertiary consumer
Which of the following molecular components would be present in a DNA sequencing reaction by the chain termination method, but not in a PCR reaction to amplify a particular gene?
a. dideoxynucleotides b. a DNA polymerase c. template DNA d. deoxynucleotides e. at least one DNA primer