Attenuator riboswitch (Leader sequence) region 1 is translated  till UGA (R1-2) at high trp concentration due to two conditions

1. Ribosome quickly crosses codon 10, 11

2. After crossing codon 10, 11 ribosome prematurely terminated at UGA at the end of Region 1

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#Id: 8403

#Unit 2. Cellular Organization

AP activates a  voltage gated Ca2+ channel in the T-tubule membrane, it triggers the opening of a Ca2+ -release channel in the closely associated SR membrane

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#Id: 9747

#Unit 6. System Physiology – Plant

Inducible defense against pests or pathogens, involve both a wound response and the recognition of certain compounds abundant in the insect’s saliva or regurgitant. 

These compounds belong to a broad group of chemicals called elicitors

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#Id: 5453

#Unit 7. System Physiology – Animal

During the relative refractory period, stronger than normal stimuli can cause excitation

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#Id: 4798

#Unit 13. Methods in Biology

Mean deviation: It is the mean of the absolute values of the numerical differences between the numbers of a set and their mean or median.

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#Id: 9570

#Unit 11. Evolution and Behavior

Van Valen law -  he found a surprising result: rather straight curves, implying that the probability of extinction is roughly constant.