Which of the following are the characteristics of prokaryotic operator O1

a. Made up of 21-bp sequence 

b. It has twofold/dyad symmetry 

c. Recognized by two subunits of Lac repressor

d. On each O1 four unit of Lac repressor binds

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#Question id: 19219

#Unit 12. Applied Biology

A unique feature of border sequences present at t-dna region

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#Question id: 12658

#Unit 7. System Physiology – Animal

In a person on a high (200 mmol/day) potassium diet, which part of the nephron would be expected to secrete the most potassium?

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#Question id: 20324

#Unit 4. Cell Communication and Cell Signaling

What is the main difference between Gram positive and Gram-negative quorum sensing mechanism?

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#Question id: 1041

#Unit 4. Cell Communication and Cell Signaling

The lactobacilli, in their role as normal flora of the vagina, help the vagina resist infection by contributing to

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#Question id: 11203

#Unit 7. System Physiology – Animal

Which of the following statements about action potentials is correct?