TLS Online TPP Program

#Question id: 2237


Glucose enters erythrocytes via a GLUT-1 uniporter. As the levels of glucose in the bloodstream decrease between meals, what happens to the glucose in the cells?

#Unit 2. Cellular Organization
  1. Glucose leaves the cell through the GLUT-1 uniporter, traveling down the new concentration gradient.

  2. Glucose remains in the cell because uniporters can only transport in one direction.

  3. Glucose remains in the cell because the GLUT-1 uniporters are gated and the gates close at low glucose concentrations.

  4. Glucose remains in the cell because it has been phosphorylated and no longer has affinity for the GLUT-1 uniporter.

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TLS Online TPP Program

#Question id: 19733

#Unit 3. Fundamental Processes

Extensive shortening of telomeres eventually leads to 

TLS Online TPP Program

#Question id: 19734

#Unit 3. Fundamental Processes

Some of the statements are given regarding shelterin choose the correct 
a) Shelterin is the complex of telomeric protein
b) Shelterin functions to protect telomeres from DNA damage repair pathways
c) In mammals, six telomeric proteins (TRF1, TRF2, Rap1, TIN2, TPP1, and POT1) comprises a complex.
d) Shelterin also regulate telomere length control by telomerase

TLS Online TPP Program

#Question id: 19735

#Unit 3. Fundamental Processes

In mammals, six telomeric proteins (TRF1, TRF2, Rap1, TIN2, TPP1, and POT1) comprises a complex which of the following is incorrect regrarding these telomeric protein
a) TRF1, TRF2, Rap1, binds to double stranded of DNA
b) TIN2 does not binds to DNA at all
c) POT1 binds to the GT tail extended by telomerase
d) TIN2 interacts with the two duplex telomeric DNA-binding proteins TRF1 and TRF2 as well as with TPP1

TLS Online TPP Program

#Question id: 19736

#Unit 3. Fundamental Processes

Which of the following shelterin protein interacts with the two duplex telomeric DNA-binding proteins TRF1 and TRF2 as well as with TPP1

TLS Online TPP Program

#Question id: 19737

#Unit 3. Fundamental Processes

Choose the incorrect statement regarding telomerase 

TLS Online TPP Program

#Question id: 19738

#Unit 3. Fundamental Processes

For the synthesis of telomere by telomerase require Only