Dental plaque is an example of

A) an endospore.
B) a cell membrane.
C) a biofilm.
D) beneficial bacteria.
E) bacterial flagella.


C

Biology & Microbiology

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Which of the following molecules is not considered a porphyrin?

A. Hemoglobin B. Peptidoglycan C. Vitamin B12 D. Chlorophyll

Biology & Microbiology

In order for a tumor cell to metastasize, which of the following would you expect to happen?

A. a decrease in cadherin expression and an increase of integrin expression B. an increase of cadherin expression and a decrease in integrin expression C. an increase in both cadherin and integrin expression D. a decrease in both cadherin and integrin expression

Biology & Microbiology

The primary muscle(s) involved in human breathing is/are the ____

a. external intercostals

b. internal intercostals c. diaphragm d. abdominal wall e. lung

Biology & Microbiology

The interactions and exchange of energy between all feeding levels is known as a ________

A) food web B) feeding frenzy C) trophic level D) food succession

Biology & Microbiology