Which cells assist and nourish neurons that transmit electrical signals?

a. receptor cells
b. neurons
c. effector cells
d. glial cells
e. signal cells


ANSWER: d

Biology & Microbiology

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The first group of cells to migrate through the blastopore will become

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Enzymes work with at least three mechanisms. Which of the following is not a mechanism by which enzymes function?

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Methylation regulates transcription

a. via the addition of a methyl group to cytosine bases of DNA. b. via the addition of a methyl group to cysteine residues on RNA polymerase II. c. via the addition of a methyl group to cysteine bases of DNA. d. via the addition of a methyl group to cytosine residues on RNA polymerase II. e. by interfering with the chromatin remodeling process.

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