When the reticular activating system sends stimuli to the cerebral cortex, a state of __________
results.
a. fatigue
b. confusion
c. alertness
d. anxiety
e. sleep
C
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In addition to investigations with bacteria that led to him being considered the Father of Microbiology, Pasteur also
A. found that some molecules can exist as stereoisomers. B. created aspartame. C. separated organic acids using a microscope. D. discovered polarized light. E. found that some molecules can exist as stereoisomers AND separated organic acids using a microscope.
The trp operon is an example of which type of transcriptional regulation?
A. post translational B. methylation C. a repressor which is activated by the presence of the amino acid tryptophan D. none of the above
Semen does not contain
a) prostate fluid b) urine c) fructose d) prostaglandins e) both b and d are correct
Which of the following levels of organization includes all of the others?
A. Population B. Ecosystem C. Community D. Organism E. Habitat