Since ________ binds CO2 more readily than does rubisco, scientists would want to incorporate this compound into agricultural plants.
A. chlorophyll
B. a four-carbon organic acid
C. phosphoenolpyruvate carboxylase
D. cam photosynthesis
E. oxygen
C. phosphoenolpyruvate carboxylase
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Four of the following fabrics are made from angiosperms. Which one is the exception?
a. corn
b. burlap c. linen d. ramie e. hemp
The use of traditional cross-breeding in developing breeds with desired characteristics is limited by __________
A. the short generation times of animals. B. large litter sizes. C. whether individuals with the desired traits will inter-breed. D. traits with specific inheritance patterns. E. traits that are controlled by a single gene.
In humans, the "master sex switch" that determines whether an embryo will become a male is the
a. X chromosome. b. locus. c. SRY gene. d. androgen switch.
Without the greenhouse effect, the Earth would
A) be much warmer than it currently is. B) be much colder than it currently is. C) have uniform temperatures and would lack seasons. D) have constant sunlight.