The minimum temperature needed to kill all microbes in a sample within ten minutes is called the
A) thermal death point.
B) essential reduction point.
C) decimal reduction time.
D) critical death time.
E) thermal death time.
Answer: A
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Examine the relationships between the elephants in the figure below. Which one of the following pairs is most closely related?
A) Deinotherium and Platybelodon B) Barytherium and Stegodon C) Loxodonta africana and Loxodonta cyclotis D) Mammut and Stegodon
Many insects make larvae that are very different from the adults. What do you think are advantages of this system? Check all that apply.
_____ Adults and offspring would not compete for food sources. _____ Adults and offspring would not be vulnerable to the same predators. _____ Adults and offspring would not compete for potential mates. _____ Adults and offspring would not compete for habitats.
Four of the five choices listed below are different
forms of a class of nucleic acids. Select the exception. a. template b. ribosomal c. messenger d. transfer e. mRNA
What is an amphipathic molecule. Give an example
A. A molecule that contains quaternary structure such as PROTEINS. B. (4) A molecule that is hold together by hydrophobic interactions such as PROTEINS C. A molecule that contains hydrophobic groups such as LIPIDS D. A molecule that contains both hydrophobic and hydrophilic groups such as LIPIDS. E. A molecule that contains both hydrophobic and hydrophilic groups such as POLYSACCHARIDES.