M. catarrhalis can be described as a:
a. gram-positive diplococcus.
b. gram-negative diplococcus.
c. gram-negative coccobacillus.
d. gram-negative bacillus.
B
M. catarrhalis appear on Gram smear as gram-negative diplococci with adjacent sides flattened.
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Which hormone increases the absorption of glucose by the body's cells?
A. insulin B. glucagon C. adrenocorticotropin D. leptin E. adrenaline
Mycoplasma
A. lack peptidoglycan. B. are the smallest free-living organisms. C. have sterols in their membranes. D. are killed by penicillin. E. lack peptidoglycan, are the smallest free-living organisms AND have sterols in their membranes.
Which substance is found in RNA but not in DNA?
a. thymine b. deoxyribose c. uracil d. guanine e. cytosine
When cyclin D1 is expressed in normal levels, it stimulates the cell cycle. If overexpressed, it can promote cancer by allowing cells to overproliferate
The normal cyclin D1 gene, which has the potential to cause cancer if mutated and/or overexpressed, is known as what?