Practice Questions

TLS Online TPP Program

#Question id: 3989

Which one of the following statements about the transcription attenuation mechanism is true?

#Unit 3. Fundamental Processes

In some operons (e.g., the his operon), attenuation may be the only regulatory mechanism.
Sequences of the trp operon leader RNA resemble an operator.
The leader peptide acts by a mechanism that is similar to that of a repressor protein.
The leader peptide gene of the trp operon includes no Trp codons.

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TLS Online TPP Program

#Question id: 19452

#Unit 13. Methods in Biology

Angle of aperture is best considered for achieving better resolution (D)

TLS Online TPP Program

#Question id: 23117

#Unit 2. Cellular Organization

Choose the correct statement of the following

a. The nucleosome consists of approximately equal masses of DNA and histones (including H1).

b. The four core histones are present in equal amounts in the cell.

c. H1 is half as abundant as the other histones, which is consistent with the finding that only one molecule of H1 can associate with a nucleosome.

d. One turn around the nucleosome takes 80 bp of DNA

TLS Online TPP Program

#Question id: 1449

#Unit 4. Cell Communication and Cell Signaling

Src is a:

TLS Online TPP Program

#Question id: 27497

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following bonds is true Nonreducing Disaccharides such as Glycosylglycosides

TLS Online TPP Program

#Question id: 18226

#Unit 7. System Physiology – Animal

Effective coping mechanism(s) for handling stress include ______.