TLS Online TPP Program

#Question id: 10804


Major types of alkaloids, their amino acid precursors, and well-known examples of each type;

Alkaloid class

Biosynthetic precursor

Examples

A. Pyrrolidine

i. Lysine

a. Coniine

B. Tropane

ii. Ornithine

b. Retrorsine

C. Piperidine

 

c. Lupinine

D. Pyrrolizidine

 

d. Nicotine

E. Quinolizidine

 

e. Atropine and Cocaine

Which of the following combination from the given table is correct?

#Unit 6. System Physiology – Plant
  1. A-i-b;  B-ii-c;  C-ii-d;  D-i-a;  E-i-e
  2. A-i-c;  B-ii-a;  C-i-e;  D-ii-d;  E-i-b
  3. A-ii-e;  B-i-d;  C-i-b;  D-ii-c;  E-i-a
  4. A-ii-d;  B-ii-e;  C-i-a;  D-ii-b;  E-i-c
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TLS Online TPP Program

#Question id: 4495

#Unit 3. Fundamental Processes

_ elements can block this spreading, protect genes from both indiscriminate activation and repression.

TLS Online TPP Program

#Question id: 4496

#Unit 3. Fundamental Processes

Facilitates chromatin transcription was identified in human cell extracts, this factor makes transcription on chromatin templates much more efficient, choose correct statements;

TLS Online TPP Program

#Question id: 4497

#Unit 3. Fundamental Processes

Elongation, termination of transcription, and RNA processing are interconnected, presumably to ensure their proper coordination,

   Elongation factors

I.    hSPT5

To recruit the 5’ -capping enzyme to the CTD tail of polymerase

 II.   TAT-SF1

To recruits components of the splicing machinery to polymerase with a Ser-2 phosphorylated tail

TLS Online TPP Program

#Question id: 4498

#Unit 3. Fundamental Processes

Which enzyme is used in this particular mechanism;

TLS Online TPP Program

#Question id: 4499

#Unit 3. Fundamental Processes

The final RNA processing event, polyadenylation of the 3’end of the mRNA, is intimately linked with the termination of transcription. Just as with capping and splicing, the polymerase CTD tail is involved in recruiting some of the enzymes necessary for polyadenylation,

TLS Online TPP Program

#Question id: 4500

#Unit 3. Fundamental Processes

The free end of the second RNA is uncapped and thus can be distinguished from genuine transcripts. This new RNA is recognized by an RNase called, in yeast, _ and in humans_ that is loaded onto the end of the RNA by another protein that binds the CTD of RNA polymerase.