A weak acid HA has a pKa of 5.0.  If 1.0 mol of this acid and 0.1 mol of NaOH were dissolved in one liter of water, what would the final pH be?

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#Question id: 27507

#Unit 2. Cellular Organization

A 1000 bp B DNA is converted into Z form

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#Question id: 12517

#Unit 6. System Physiology – Plant

Synthesis of violaxanthin is catalyzed by an enzyme known as__

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#Question id: 6970

#Unit 5. Developmental Biology

Neural crest cells will become:

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#Question id: 18722

#Unit 13. Methods in Biology

Which DNA ligase enzyme is used in genetic engineering?

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#Question id: 1224

#Unit 4. Cell Communication and Cell Signaling

Put the steps of the process of signal transduction in the order they occur.

1. A conformational change in the signal-receptor complex activates an enzyme.

2. Protein kinases are activated.

3. A signal molecule binds to a receptor.

4. Target proteins are phosphorylated.

5. Second messenger molecules are released.