Which of the following statements regarding the surface of the skin is FALSE?

A) It has sebum as a coating.
B) It has normal microbiota.
C) It has goblet cells.
D) It is salty.
E) It is acidic.


C

Biology & Microbiology

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The primary polysaccharides associated with the plant cell wall are the

A) hemicelluloses. B) extensins. C) fibronectins. D) pectins. E) both choices A and D

Biology & Microbiology

Suppose that the concentration of K+ inside the cell was 10, and the concentration of K+ outside of the cell was 100 mmol/l. Assuming 37C, the K+ equilibrium potential is ________.

a. -70 mV b. +61 mV c. -61 mV d. -90 mV

Biology & Microbiology

Small circular molecules of DNA in bacteria ____.

A. are plasmids B. are DNA fragments from their main chromosome C. result from the activity of restriction enzymes D. are eventually degraded E. cannot survive outside of the cell

Biology & Microbiology

Choose the letter of the best match from the following:A. Birth control pillB. Intrauterine deviceC. DiaphragmD. Foams and jelliesE. VasectomySperm blockage.

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

Biology & Microbiology