A urine sample with more than 100,000 organisms is considered indicative of infection. A urine sample containing 5,000 bacteria, with a generation time of 30 minutes, sits for 3 hours before finally being assayed. How many bacteria will then be present within the sample?

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#Question id: 4491

#Unit 3. Fundamental Processes

HIV transcribes its genes from a promoter controlled by P-TEFb, P-TEFb is brought to the stalled polymerase by an RNA-binding protein, not a DNA-bound one. The protein responsible is called

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#Question id: 333

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following feature of RNA adds to its propensity to form double-helical structure?

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#Question id: 4495

#Unit 3. Fundamental Processes

_ elements can block this spreading, protect genes from both indiscriminate activation and repression.

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#Question id: 11339

#Unit 2. Cellular Organization

Calculate the free energy change for glucose entry into cells when the extracellular concentration is 5 mM and the intracellular concentration is 3 mM.

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#Question id: 5019

#Unit 11. Evolution and Behavior

A major evolutionary episode that corresponds in time most closely with the formation of Pangaea was the