Neurons that carry messages within the CNS are
a. sensory.
b. motor.
c. interneurons.
d. autonomic.
a
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In an Hfr X F- conjugation, ____
a. the Hfr cell can lose chromosomal genes that it transfers to the F- cell b. the donor cell can become a partial diploid
c. plasmid DNA is transferred from the Hfr cell to the F- cell d. chromosomal DNA can be transferred from the F- cell to the Hfr cell e. chromosomal DNA can be transferred from the Hfr cell to the F- cell
Which of the following events is believed to have occurred first?
a. endosymbiotic origin of mitochondria b. origin of cyclic pathway of photosynthesis c. endosymbiotic origin of chloroplasts d. origin of noncyclic pathway of photosynthesis
Which portion of the following molecule is most directly involved in transferring energy?
a. 1
b. 2
c. 3
d. 1 and 2
e. 2 and 3
Which of the following describes flash pasteurization?
A) heating at 63°C for 30 minutes B) heating at 72°C for 15 seconds C) heating at 72°C for 15 minutes D) heating at 134°C for one second E) passing liquid through steam at 140°C