An investigator incubates an unprocessed RNA molecule containing an intron in an extract absent of any protein. Correct splicing of the RNA is observed, but only when guanosine is present. What can the investigator conclude about the RNA molecule?

a. It contains a ribozyme. 

b. Self-splicing has occurred.

c. It contains a group II intron.

d. It contains a group I intron.

TLS Online TPP Program

#Question id: 1774

#Unit 4. Cell Communication and Cell Signaling

hinge region  provide flexibility to antibody. Which amino acid is responsible for these flexibility?

TLS Online TPP Program

#Question id: 10562

#Unit 6. System Physiology – Plant

The direction and rate of water flow across a membrane are determined by

TLS Online TPP Program

#Question id: 1706

#Unit 4. Cell Communication and Cell Signaling

Which of the following statements is the best example of a primary lymphoid organ?

TLS Online TPP Program

#Question id: 1688

#Unit 4. Cell Communication and Cell Signaling

Binding of antigen to antibody:

TLS Online TPP Program

#Question id: 14956

#Unit 6. System Physiology – Plant

Where is the catalytic domain of cellulose synthase located?