Under anaerobic conditions and in the presence of what microbial electron transfer and respiration can proceed if suitable exogenous electron acceptors are available

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#Question id: 831

#Unit 1. Molecules and their Interaction Relevant to Biology

Lysosomes therefore also have a selective pathway, which is activated that imports and degrades cytosolic proteins containing the pentapeptide sequences such as;

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#Question id: 13179

#Unit 10. Ecological Principles

In temperate lakes, the surface water is replenished with nutrients during turnovers that occur in the

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#Question id: 5018

#Unit 11. Evolution and Behavior

Which event is nearest in time to the end of the period known as snowball Earth?

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#Question id: 5347

#Unit 8. Inheritance Biology

The inheritance of a given disorder is recorded in small families shown below: Based on the above limited information, which one of the following inheritance pattern best explains the observations?

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#Question id: 3891

#Unit 3. Fundamental Processes

Protein amino acid side chains can hydrogen bond in the major groove of DNA, and discriminate between each of the four possible base pairs.  In which one of the following groups of amino acids can all three members potentially be used in such DNA-protein recognition?