A stone is pushed from the top of a hill. Halfway to the bottom of the hill, this rolling stone
a. has potential energy only.
b. has both potential energy and kinetic energy.
c. is using up chemical energy.
d. is constantly gaining more energy.
e. has kinetic energy only.
B
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In a genetic cross, the _______ represent offspring with genetic combinations that were not found in the parental lines
A. P generation B. non-recombinates C. parentals D. non-parentals E. none of these
Researchers are interested in the genomes of prokaryotic species for all of the following reasons EXCEPT
A. bacteria cause many diseases that affect people, plants, and animals. B. bacteria reveal modes of infection. C. bacteria are more complex than humans. D. the origin of the first eukaryotic cell probably involved a union between an archaeal and a bacterial cell. E. All of the choices are reasons for studying genomes of prokaryotic species.
In most ferns, roots and leaves sprout from ____
a. fronds b. rhizomes c. sporangia d. sori e. gametophytes
Prostaglandins are thought to cause ________
A) PID B) menstrual cramps C) endometriosis D) vaginitis