Dental plaque (a biofilm), a first stage in tooth decay, consists of

A. bacteria surrounded by a polysaccharide matrix.
B. lactic acid.
C. sugars.
D. fluoride.
E. bacteria and high pH.


Answer: A

Biology & Microbiology

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A color-blind, chromatin-positive male child (one Barr body) has a maternal grandfather who was color-blind. The boy's mother and father are phenotypically normal

Construct and support (using appropriately labeled diagrams) a rationale whereby the chromosomal and genetic attributes of the chromatin-positive male are fully explained.

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Microbes and bacterial-type organisms are _______

Fill in the blank(s) with the appropriate word(s).

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Temporal gene regulation refers to which of the following circumstances?

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Approximately what percentage of the energy of glucose (C6H12O6) is transferred to storage in ATP as a result of the complete oxidation of glucose to CO2 and water in cellular respiration?

A) 2% B) 4% C) 10% D) 25% E) 40%

Biology & Microbiology