Which of the following is not true about the interaction of biofilms on teeth?
A) Brushing teeth twice daily and flossing will physically remove superficial plaque layers.
B) Bacterial growth within deeper biofilm layers and new bacteria entering the mouth quickly reestablish what was removed from brushing.
C) Limiting dietary fats reduces lactic acid production by the bacteria in dental plaque and decreases the risk for dental caries,
D) When plaque calcifies into tartar it must be scraped off the teeth.
E) Dentists recommend a twice-yearly dental cleaning and checkup to limit caries and periodontal disease,
Answer: C
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Members of this lineage of flatworms are free-living and are found mostly in marine environments
Most acquire food with a muscular pharynx and are hermaphroditic.
a. Trematoda b. Turbellaria c. Polychaeta d. Cestoda e. Hirudinea
AUGCGUCCA
The sequence of amino acids specified by this mRNA is a. serine ? histidine ? lysine. b. methionine ? arginine ? proline. c. methionine ? alanine ? serine. d. valine ? arginine ? leucine. e. none of these.
Which of the following statements is false?
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