Acetylcholine is an amino acid.
a. true
b. false
Answer: b. false
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Which of the following is/are NOT a degradation product of organic material?
A) carbon dioxide B) methane C) oxygen D) carbon dioxide, methane, and oxygen
E.coli synthesizing K and B in the large intestine would be an example of which type of symbiosis?
A) antagonism B) commensalism C) parasitism D) mutualism
Sometimes the immune system overreacts from exposure to a normally harmless substance such as cat hair. Subsequent exposure to this allergen elicits a massive inflammatory response. Because the chemical histamine is the cause of this inflammation, what
cell type is most likely behind the problem? A) monocytes B) lymphocytes C) neutrophils D) basophils
A culture medium on which only salt tolerant Gram-positive organisms grow and the colonies are a mixture of pink and yellow is called a(n):
a. Selective medium b. Differential medium c. Enriched medium d. a and b e. b and c