The membrane potential in which there is no net movement of the ion across the membrane is called the ________.

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#Question id: 10985

#Unit 7. System Physiology – Animal

What is the membrane potential (threshold level) at which the S-A node discharges?

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#Question id: 9233

#Unit 9. Diversity of Life Forms

What is the biggest problem with selecting a site for a reserve?

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#Question id: 4723

#Unit 8. Inheritance Biology

The most common cause of the pleiotropic effect of gene is due to

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#Question id: 9568

#Unit 10. Ecological Principles

Which of the following represents a plant adaptation that minimizes water loss in arid environments by increasing the thickness of the boundary layer?

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#Question id: 19791

#Unit 13. Methods in Biology

Which of the following statements about polymerase chain reaction is correct?

a) PCR denaturation temperature calculated by using Y = X (1+E)n

b) Size of the primer negatively affects the efficiency of PCR

c) Standard PCR doesn’t efficiently amplify sequence much longer than about 5kb.

d) Primer annealing of PCR at 550C for 1.5 min.

e) Time taken for each cycle of PCR considerably longer than 3 min.