Which of the following statements is consider under as equatorial region functions?

a) involve to the recruitment of the egg membrane protein CD9

b) exposed by the acrosomal reaction

c) membrane fusion between sperm and egg

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#Question id: 19722

#Unit 3. Fundamental Processes

Telomerase, a reverse transcriptase that contains an RNA template, repeatedly adds 

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#Question id: 3726

#Unit 3. Fundamental Processes

What is a reasonable length for an RNA primer in E. coli?

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#Question id: 16129

#Unit 13. Methods in Biology

5 You are studying regulation of the yeast enzyme glutamine synthetase (GS), which is encoded by the GLN1 gene. You have isolated two mutants, designated gln2– and gln3–, that give decreased GS activity. Mating of either gln2– or gln3– haploids to wild type produces heterozygous diploids that show normal amounts of GS expression. When you cross either a gln2– or gln3– haploid to a gln1– strain the resulting diploids show normal expression of GS.

Describe the cis-acting elements in the GLN1 promoter that are evident from these experiments, giving both their position and as much of their function as you can deduce.

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#Question id: 1719

#Unit 4. Cell Communication and Cell Signaling

Langerhans' cells are found in:

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#Question id: 23632

#Unit 13. Methods in Biology

Which formula may be implemented to determine the probability (P) that a library of a given size contains a particular clone? (N is the number of recombinant clones in the library; n is the frequency of occurrence of a desired clone)