What part of a cell stores the coded information?
a. cell membrane
b. cell wall
c. cytoplasm
d. ribosome
e. nucleus
e
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What can you infer about the lepton number of the anti-neutrino?
A. This quanton has lepton number = +1. B. This quanton has lepton number = -1. C. This quanton has lepton number = 0. D. One cannot determine this quanton’s lepton number from the processes we have studied.
The source of a sonic boom may be a
A) whip. B) a high-speed bullet. C) both of these D) neither of these
The public debate about Martian canals was not resolved until
A) many scientists were unable to reproduce Percival Lowell's sketches of Martian canals B) the governing body of astronomy, the International Astronomical Union made an official statement on the matter C) the first spacecraft flew past Mars in 1965 D) the first spacecraft landed on Mars in 1976
The ratio R at which paint can be sprayed from a spray gun may be expressed as R = a ? t. If R is measured in m3/ s, and time is measured in seconds, what are the units of "a"?
A) m3 B) m3s C) m3 s3 D) m3/s E) m3/s2