Olfactory receptors detect
a. water-soluble substances.
b. volatile substances.
c. fat-soluble substances.
d. alcohol-soluble substances.
e. both a and b.
E
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________________ occurs when not all of the person's cells have the same genetic makeup
Apoptosis Mosaicism Cytokinesis Cancer
Regulatory proteins
A) are influenced by small molecules. B) bind to specific DNA sites. C) regulate transcription. D) regulate transcription, bind specific DNA sites, and can be influenced by small molecules.
Which one of the following parts of the brain regulates heart activity?
A) cerebrum B) cerebellum C) thalamus D) midbrain E) medulla oblongata
Biological membranes contain bilayers containing mostly ________.
A. prostaglandins B. oils C. cholesterol D. phospholipids E. triglycerides