Crystallization of tobacco mosaic virus was accomplished by

A. Berkley.
B. Stanley.
C. Iwanowsky.
D. Twort.


B

Biology & Microbiology

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The time required to kill 90% of the microorganisms or spores in a sample at a specified temperature is the ________.

A. decimal reduction time (D value) B. z value C. thermal death time (TDT) D. thermal death point (TDP)

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oxygen concentration

What will be an ideal response?

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Territoriality often results in clumped dispersion. Indicate whether the statement is true or false

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Pollination and fertilization are essentially the same process. If pollination occurs, fertilization will follow quickly.

Answer the following statement true (T) or false (F)

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