The lowest temperature that kills all cells in a broth in 10 minutes is known as the (microbial/terminal/thermal) death point
What will be an ideal response?
thermal
Bloom's Taxonomy: Knowledge
Section: Physical Methods of Microbial Control
Learning Outcome: 9.11
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The results obtained when the linker was cloned between -50 and -100 indicate that
A. this region is not critical for transcription but can enhance transcription B. the assay failed C. when cloned in this region the linkers had a transacting effect D. the results of the assay were variable and this is just due to random variation in the assay Bloom's Level:
The Precambrian supereon, in which life first appeared and diversified to multicellular eukaryotes, lasted approximately ___ of the geologic timescale.
A. 50% B. 30% C. 15% D. 85% E. None of the answer choices is correct.
There are not many species of fish living deep in the oceans, but the deep-sea fish occasionally pulled up by fisherman have been bizarre creatures, such as the deep-sea anglerfish with its giant fangs and bioluminescent lure. Why have these fascinating deep-sea fish never been shown live on exhibit in an aquarium?
A. Their diet is too specialized. B. They are adapted to cold temperatures and total darkness. C. They might frighten visitors. D. They are adapted for high pressure, and will die at low pressure. Clarify question: What is the key concept addressed by the question? What type of thinking is required? Gather Content: What do you already know about the deep sea environment? What other information is related to the question? Choose Answer: Given what you now know, what information is most likely to produce the correct answer? Reflection on Process: Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
When does crossing-over occur?
A) Prophase I of meiosis B) Prophase II of meiosis C) Interphase prior to meiosis D) At any time during the second meiotic division E) At any time throughout division