A response that is uniquely directed against pathogenic Bordetella pertussis would involve what component?

a. Skin barrier
b. The complement system
c. Antibodies
d. Inflammation


Ans: c. Antibodies

Biology & Microbiology

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What is the importance of the mucins that are released by salivary glands?

A) They aid in degradation of triglycerides to fatty acids and monoglycerides. B) They are beginning the process of starch digestion. C) They are hormonal molecules that stimulate the release of gastric juice by the stomach in anticipation of receipt of the contents of the mouth. D) They are glycoproteins that make food slippery enough to slide easily through the esophagus.

Biology & Microbiology

In the absence of a specific carrier protein, the molecule least likely to cross the membrane is one that is ________

a. small and nonpolar b. small and polar c. large and polar d. large and nonpolar

Biology & Microbiology

Considering solutions on either side of a selectively permeable membrane, a solution of higher

osmolarity is said to be hyperosmotic to a solution of lower osmolarity

Indicate whether the statement is true or false.

Biology & Microbiology

At which one of the following stages of the cell cycle does a chromosome develop into two sister chromatids?

A) mitotic phase B) S phase C) G1 phase D) G2 phase E) G0 phase

Biology & Microbiology