The Gram stain works because of differences in the ________ of bacteria.

A. genetic characteristics
B. cell walls
C. cell membranes
D. antigens
E. capsules


Answer: B

Biology & Microbiology

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Which of the following statements is true regarding neurotransmitters and synaptic signaling? Select all correct choices

A. All neurotransmitters are also hormones. B. All synaptic signaling is rapid. C. All synaptic signaling occurs between nerve cells. D. All neurotransmitters are released into the blood stream.

Biology & Microbiology

In some plants, companion cells become modified into phloem cells that facilitate the short-distance transport of

various organic solutes from the symplast into the apoplast.

a. True b. False

Biology & Microbiology

The cell itself begins to elongate during which phase of meiosis?

a. prophase I b. metaphase I c. anaphase I d. telophase I e. metaphase II

Biology & Microbiology

What is the major product of the Calvin-Benson cycle that can then be used to form glucose?

A) CO2 B) ATP C) RuBP D) glyceraldehyde 3-phosphate E) NADPH

Biology & Microbiology