When counting colonies during viable cell counts, the results are expressed as ________ because it is impossible to determine that each colony arose from a single cell.
Fill in the blank(s) with the appropriate word(s).
colony forming units
Biology & Microbiology
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Describe three characteristics of an ideal cloning host for genetic engineering
What will be an ideal response?
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Sponges have been abundant since the Cambrian period, especially in shallow coastal areas
a. True b. False
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The tightly coiled structure inside each testis that produces sperm cells is the
A. seminiferous tubule. B. epididymis. C. vas deferens. D. interstitial cell. E. bulbourethral gland.
Biology & Microbiology
Mutations that are harmful to cells occur more frequently than those that benefit cells
Indicate whether the statement is true or false
Biology & Microbiology