The structure in the above figure demonstrates which

of the following ?
a. transcription and translation occur
simultaneously on a single strand
b. ribosomes attached to a strand of DNA
c. a small ribosomal subunit
d. multiple ribosomes on a strand of mRNA
e. all of these


Answer: d

Biology & Microbiology

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What will be an ideal response?

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Signal transduction is the process by which:

A. transcription factors bind to cis-regulatory regions of DNA and either activate or repress transcription. B. a specific combination of transcription factors determines the developmental pathway in a cell or group of cells. C. a single master gene, or signal, activates a series of downstream genes that lead to cell differentiation. D. an extracellular molecule activates a membrane protein, which in turn activates molecules inside the cell. E. None of these choices is correct.

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Which endocrine gland regulates the overall metabolic rate of the body, as well as playing a role in calcium homeostasis?

a. pituitary
b. adrenal
c. thyroid
d. parathyroid

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What happens during phagocytosis?

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