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TLS Online TPP Program

#Question id: 187

The pH inside cells is normally near pH 7. At pH 7 which statement is true about the charges (ionization state) of the α-Carboxyl and α-Amino groups of an amino acid?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. The α-Carboxyl group is 1- and the α-Amino group is 1+.

  2. The α-Carboxyl group is 1+ and the α-Amino group is 1-.

  3. The α-Carboxyl group is 1- and the α-Amino group is uncharged.

  4. Both groups are uncharged (not ionized) at pH 7.

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TLS Online TPP Program

#Question id: 3745

#Unit 3. Fundamental Processes

In the Holliday model describing recombination
TLS Online TPP Program

#Question id: 3746

#Unit 3. Fundamental Processes

During recombination in E. coli, ________ recognize(s) regions of sequence similarity and promote(s) strand invasion, while ________ bind(s) to a Holliday junction promoting strand migration.
TLS Online TPP Program

#Question id: 3747

#Unit 3. Fundamental Processes

The sequence of proteins used in bacterial recombination is
TLS Online TPP Program

#Question id: 3748

#Unit 3. Fundamental Processes

How are the BRCA proteins and their genes implicated in breast cancer?
TLS Online TPP Program

#Question id: 3749

#Unit 3. Fundamental Processes

Which of the following statements describes the process of transformation in bacteria?
TLS Online TPP Program

#Question id: 3750

#Unit 3. Fundamental Processes

Which of the following facts did Hershey and Chase make use of in trying to determine whether DNA or protein is the genetic material?