Transphosphorylation (cross-phosphorylation) of receptor tyrosine kinases

a. inhibits catalytic activity.

b. promotes transphosphorylation of additional tyrosine residues.

c. triggers release of the ligand.

d. generates binding sites for signaling molecules.

TLS Online TPP Program

#Question id: 19044

#Unit 13. Methods in Biology

Which of the following techniques would be most useful to identify as well as quantify the presence of a known impurity in a drug substance? 

TLS Online TPP Program

#Question id: 23895

#Unit 13. Methods in Biology

Which technique separates nucleic acids (DNA and RNA) by molecular weight?

TLS Online TPP Program

#Question id: 23891

#Unit 13. Methods in Biology

Which of the following is (are) used both in the polymerase chain reaction (PCR) and in DNA sequencing?

a. single-stranded DNA primers

b. deoxynucleotide triphosphates (dNTPs)

c. dideoxynucleotide triphosphates (ddNTPs)

d. DNA polymerase

TLS Online TPP Program

#Question id: 23707

#Unit 13. Methods in Biology

Which of the following separates molecules by movement due to size and electrical charge?

TLS Online TPP Program

#Question id: 23706

#Unit 13. Methods in Biology

Which of the following cuts DNA molecules at specific locations?

TLS Online TPP Program

#Question id: 23705

#Unit 13. Methods in Biology

Which of the following is used to make complementary DNA (cDNA) from RNA?