Which of the following is correct regarding the β turns

(1) In Type I β turn i+1 lies in RHH region while i+2 lies near BS region

(2) In Type II β turn i+1 lies in BS while i+2 lies in below LHH

(3) In Type I’ β i+1and i+2 in near LHH which virtually not allowed region for most of amino acid except Gly

(4) In Type II’ β i+2 lies at 00 psi and i+1 in lower right region both i+2 and   i+1  must be Gly

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#Question id: 28921

#Unit 4. Cell Communication and Cell Signaling

Which of the following modification is required for the Secretion of Hh protein?

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#Question id: 2260

#Unit 2. Cellular Organization

The term "nuclear envelope" is more correct than the term "nuclear membrane" because

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#Question id: 1547

#Unit 4. Cell Communication and Cell Signaling

follicular dendritic cells (FDCs) secrete CXCL13 and its receptor, CXCR5, which is expressed on B cells, function of this interaction ?

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#Question id: 19689

#Unit 13. Methods in Biology

Which of the following statements are true about the PR interval?

a. It includes the P wave and the PR segment

b. The beginning of electrical excitation of the atria and the beginning of excitation of the ventricles.

c. Conduction time through the AV node.

d. P wave + PR segment + QRS Complex

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#Question id: 3294

#Unit 11. Evolution and Behavior

Which one of these processes describes bottleneck effect?