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TLS Online TPP Program

#Question id: 3864

RNA polymerase:

#Section 3: Genetics, Cellular and Molecular Biology

  1. binds tightly to a region of DNA thousands of base pairs away from the DNA to be transcribed.

  2. can synthesize RNA chains de novo (without a primer).

  3. has a subunit called lambda, which acts as a proofreading ribonuclease.

  4. separates DNA strands throughout a long region of DNA (up to thousands of base pairs), then copies one of them.

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TLS Online TPP Program

#Question id: 3697

#Section 3: Genetics, Cellular and Molecular Biology

In the Meselson-Stahl DNA replication experiment, what percent of the DNA was composed of one light strand and one heavy strand after one generation of growth in 14N containing growth media?
TLS Online TPP Program

#Question id: 198

#Section 2: General Biology

NAD and NADP dependent dehydrogenases catalyze substrates by transferring ________ to  C-4 of NAD+ and NADP+.
TLS Online TPP Program

#Question id: 12908

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which statement is incorrect about CRISPR?
TLS Online TPP Program

#Question id: 13044

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

How many different types of dNTPs are utilized in a reaction mixture when carrying out sanger’s DNA sequencing ?
TLS Online TPP Program

#Question id: 3885

#Section 3: Genetics, Cellular and Molecular Biology

AZT (3'-azido-2',3'-dideoxythymidine), used to treat HIV infection, acts in HIV-infected cells by: