Which of the following growth factor causes proliferation of the Sertoli cell precursors and stimulates their differentiation?

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#Question id: 4217

#Unit 3. Fundamental Processes

Which of the following statements correctly describes the function of a signal peptide?

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#Question id: 4356

#Unit 3. Fundamental Processes

Gene expression is often assayed by measuring the level of mRNA produced from a gene. What level of the control of gene expression can by analyzed by this type of assay?

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#Question id: 19156

#Unit 13. Methods in Biology

Which polymer is often used for matrix materials in Affinity chromatography?

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#Question id: 26440

#Unit 3. Fundamental Processes

Choose the correct statement 

a. Long patch repair system is accomplished by Lig1, FEN1, Pol ζ ε, and APE1 

b. Long patch repair system is accomplished by Lig3, FEN1, Pol ξ β ,APE1 & lyase action

c. Short patch repair system is accomplished by Lig3, FEN1, Pol  ξ β,APE1 & lyase action

d. Short patch repair system is accomplished by Lig1, FEN1, Pol ζ ε, , and APE1

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#Question id: 28876

#Unit 4. Cell Communication and Cell Signaling

Wnt proteins are modified by linkage of a monounsaturated fatty acid, by which type of amino acid?