Sebum contains ________ which contributes to creating an inhospitable environment on the surface of the body.

A. lysozyme
B. collagens
C. acids
D. salts
E. bile


Answer: C

Biology & Microbiology

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Certain meteorites have been examined and found to carry samples of which one of the following?

A. lipids B. amino acids C. photosynthetic bacteria D. lipids and amino acids E. lipids, amino acids, and photosynthetic bacteria

Biology & Microbiology

When the protoplast shrinks away from the cell wall, it is called ____

a. plasmolysis b. tight c. wilted d. turgid e. full

Biology & Microbiology

Which of the following describes the purpose of the polymerase chain reaction?

a. increasing the number of copies of DNA b. separating charged molecules by size and charge c. opening cells to extract DNA in a gelatinous mass d. cutting DNA sequences in a predictable manner

Biology & Microbiology

Gel electrophoresis separates the DNA

fragments according to a. their length. b. their mass. c. their speed of travel through the gel. d. the number of nucleotides in the fragment. e. all of these.

Biology & Microbiology