Pellagra is a deficiency disease related to which of

the following vitamins?
a. A
b. B1 (thiamine)
c. C (ascorbic acid)
d. B2 (riboflavin)
e. B6 (niacin)


Answer: e

Biology & Microbiology

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The observation that atmospheric CO2 levels were typically low during glacial periods in Earth's history is an example of _________________

A. causation B. correlation C. communication

Biology & Microbiology

After DNA replication, each chromosome contains two sister _____

a. chromatids b. chromatins c. chromosomes d. centromeres e. centrioles

Biology & Microbiology

Which one of the following occurs with each cycle of the sodium-potassium pump?

A) Sodium is moved into the cell, creating a net negative charge outside the cell. B) The net effect is removal of one osmotic particle and one positive charge from inside the cell. C) The net effect is removal of one osmotic particle and one negative charge from inside the cell. D) The inside of the cell becomes more negative as potassium is pumped out. E) Two potassium ions and three sodium ions are pumped out of the cell.

Biology & Microbiology

If you awoke and looked out your window and saw a gopher shaking, what might be true about the temperature outside?

What will be an ideal response?

Biology & Microbiology