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
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The technique of_____ is used to copy the genome of a single microbial cell so there is sufficient DNA for sequencing.
What will be an ideal response?
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.
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
What happens during phagocytosis?