Negatively charged large molecules are filtered less easily than positively charged molecules of equal molecular size.

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#Id: 4018

#Unit 7. System Physiology – Animal

When the potential reaches a threshold voltage of about −40 millivolts, the L-type calcium channels become “activated,” causing the action potential

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#Id: 8093

#Unit 1. Molecules and their Interaction Relevant to Biology

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#Id: 7276

#Unit 6. System Physiology – Plant

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#Id: 2643

#Unit 13. Methods in Biology

After you have identified the physiological transcription start site by S1 mapping or primer extension you can use run-off transcription in vitro.

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#Id: 4910

#Unit 13. Methods in Biology

Variance is always non-negative since each term in the variance sum is squared and therefore the result is either positive or zero.