Answer the question using the accompanying figure. Sea turtles are likely to die when they are young, but have a good
chance of surviving once they reach large size. Which survivorship curve best fits this species?
a. Type I, which is graph A
b. Type II, which is graph B
c. Type I, which is graph C
d. Type III, which is graph C
e. Type III, which is graph A
ANSWER: d
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Superantigens
A. are potent stimulators of T cells. B. include erythrogenic toxin. C. include streptolysin O. D. induce production of tumor necrosis factor. E. All of the choices are correct.
Considering the traditional view of ecological
succession, which of the following plants would most likely be a pioneer species in a primary succession event?
a. an oak tree that produces acorns dispersed by squirrels b. a snapdragon flower pollinated by bees c. a dandelion which produces seeds asexually and disperses seeds by the wind d. it could be any of these e. it couldn’t be any of these
Describe the evolutionary relationships between the following organisms. Draw a family "tree" if
necessary. Include bony fish, amniotes, lizards, mammals, turtles, birds, reptiles, ray-finned fishes, amphibians, lungfish, and lobe-finned fishes. What will be an ideal response?
Considering the principle of complementary base pairing, you would expect an equal ratio of which two nitrogenous bases in a DNA molecule?
A) adenine and guanine B) thymine and cytosine C) cytosine and guanine D) guanine and thymine E) uracil and adenine