TLS Online TPP Program

#Question id: 31045


Ras proteins (RasD) contain a mutation at position 12. Replacement of the normal glycine 12 with any other amino acid-

#Unit 4. Cell Communication and Cell Signaling
  1. “Locks” Ras in the inactive GDP-bound state
  2. “Locks” Ras in the active GTP-bound state
  3. “Locks” Ras in the active GDP-bound state
  4. “Locks” Ras in the inactive GTP-bound state
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TLS Online TPP Program

#Question id: 30086

#Unit 2. Cellular Organization

Which one of the following is the correct match between below mentioned options?


TLS Online TPP Program

#Question id: 4888

#Unit 8. Inheritance Biology

The A locus and the D locus are link with 50 % chance of crossing over observed between them. If Ad/Ad is crossed to aD/aD, and the F1 is test cross, which of the following phenotype is statement is correct?

A) Frequency of recombinant progeny is equal to parental frequency

B) Frequency of recombinant progeny is less than parental frequency

C) Distance between Locus A and B is 50 map unit

D) Distance between Locus A and B is 25 map unit

TLS Online TPP Program

#Question id: 3806

#Unit 3. Fundamental Processes

How are damaged nucleotides recognized by DNA repair enzymes?

TLS Online TPP Program

#Question id: 12718

#Unit 6. System Physiology – Plant

primary disruptions could be signaling the plant that a change in environmental conditions has occurred and that it’s time to respond by altering existing pathways or by activating stress-response pathways. At least five different types of stress-sensing mechanisms can be distinguished:

                       

                          COLUMN I

 

 

                              COLUMN II

 

A) Physical sensing

 

 

i) usually results from the detection of by-products that accumulate in cells due to the uncoupling of enzymatic or electron transfer reactions, such as the accumulation of ROS during stress caused by too much light.

 

 

B) Biophysical sensing

 

 

ii) often involves the presence of specialized proteins that have evolved to sense a particular stress; for example, calcium channels that can sense changes in temperature and alter Ca2+ homeostasis.

 

 

C) Metabolic sensing

 

 

iii) refers to modifications of DNA or RNA structure that do not alter genetic sequences, such as the changes in chromatin that occur during temperature stress.

 

 

D) Biochemical sensing

 

 

iv) refers to the mechanical effects of stress on the plant or cell structure, for example, the contraction of the plasma membrane from the cell wall during drought stress.

 

 

E) Epigenetic sensing

 

 

v) might involve changes in protein structure or enzymatic activity, such as the inhibition of different enzymes during heat stress.

 

 

  
Match the correct sequence sensing mechanism during in stress;

TLS Online TPP Program

#Question id: 18901

#Unit 13. Methods in Biology

Calcium-47 Important aid to biomedical researchers studying the