What is the normal total delay of the cardiac impulse in the A-V node plus bundle?

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#Question id: 20259

#Unit 12. Applied Biology

Under stress condition expression of E, coli gene mtl 1D in plants leads to 

1. Mannitol accumulation 

2. Enhanced growth 

3. Reduced growth

4. Glucose accumulation 

Which of the following is correct option?

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#Question id: 4161

#Unit 3. Fundamental Processes

The link between an activated amino acid and tRNA is an __ bond between the __ of the amino acid and a hydroxyl group of the tRNA.

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#Question id: 31042

#Unit 4. Cell Communication and Cell Signaling

Monomeric Ras proteins are GTPase “switch” proteins. Ras activation is accelerated by: 

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#Question id: 264

#Unit 1. Molecules and their Interaction Relevant to Biology

Supercoiling of pure circular DNA is a result of ________.

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#Question id: 12496

#Unit 8. Inheritance Biology

A woman who has two brothers and a maternal uncle (her mother's brother) with non-specific X-linked mental retardation is referred for genetic counselling. There are no diagnostic tests available to help determine whether or not she is a carrier. Which of the following is correct?