In order to produce human insulin in bacteria what must be done first?

A. Human insulin protein is purified from the bacteria.
B. The human insulin gene must be cloned.
C. The human insulin gene must be transformed into bacteria.
D. Bacteria containing the human insulin gene are grown.
E. The bacterial insulin gene must be cloned.


B. The human insulin gene must be cloned.

Biology & Microbiology

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Liquid media containing heat-sensitive components would best be sterilized by

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Which of the following patterns of information flow is unique to retroviruses within a cell?

A) RNA ? protein B) protein ? DNA C) RNA ? DNA D) DNA ? RNA E) protein ? RNA

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Osteoblasts deposit ________ on the collagen frame during the development of bone from cartilage

Fill in the blank(s) with correct word

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Which of the following is an incorrect pairing?

A. magnification; refraction of radiation B. contrast; staining techniques C. numerical aperture; curved glass D. dark field: high contrast E. electron beams; shorter wavelength

Biology & Microbiology