The original source of salicylic acid, the pain-relieving substance in aspirin, was ____
a. resin from conifers
b. leaves from bamboo
c. bark from willow trees
d. fibers from flax plants
e. seeds from yew trees
ANSWER: c
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What wavelength of light in the figure is most effective in driving photosynthesis?
A) 420 mm B) 475 mm C) 575 mm D) 625 mm E) 730 mm
A distinguishing feature of Lepidosauria is their:
A. hard shell B. kinetic skull C. external fertilization D. shell-less eggs E. none of the choices provided
An effective parasite is one that kills its host quickly
Indicate whether the statement is true or false
If a researcher used Escherichia coli DNA polymerase instead of Thermus aquaticus DNA polymerase in the PCR procedure, what would be the result?
A. DNA replication would occur more slowly than normal. B. DNA replication would not occur at all. C. Many mistakes would occur. D. DNA replication would occur twice as fast as normal. E. DNA replication would stop after one cycle.