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TLS Online TPP Program

#Question id: 4141

Bacterial ribosomes:

#Molecular Biology

  1. bind tightly to specific regions of DNA, forming polysomes.

  2. contain at least one catalytic RNA molecule (ribozyme).

  3. contain three species of RNA and five different proteins.

  4. require puromycin for normal function.

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TLS Online TPP Program

#Question id: 27069

#Biochemistry

Choose the correct option regarding the stereochemistry of given compound 
TLS Online TPP Program

#Question id: 27070

#Biochemistry

Which of the following statements is correct regarding the stereochemistry of Thr, Ile 
1. Thr, Ile is special case because of two chiral center exist in L-Ile in 2R,3S and L-Thr in 2R,3S configuration 
2. Thr, Ile is special case because of two chiral center exist in D-Ile in 2R,3S and D-Thr in 2R,3S configuration 
3. Thr, Ile is special case because of two chiral center exist in L–Ile in 2S,3R and L–Thr in 2S,3R 
4. Thr, Ile is special case because of two chiral center exist in D–Ile in 2S,3R and D–Thr in 2S,3R
TLS Online TPP Program

#Question id: 1232

#Biochemistry

Which of the following mutations might confer a competitive advantage to an athlete by raising his or her hematocrit?

a. excess production of erythropoietin                       

b. decreased production of erythropoietin

c. EpoR that cannot bind STAT5                  

d. EpoR that cannot bind SHP1

e. EpoR that cannot bind JAK2
TLS Online TPP Program

#Question id: 88

#Biochemistry

Anomers can be interconverted ________.
TLS Online TPP Program

#Question id: 27159

#Biochemistry

This event can cause a damage to the hypothalamus portal system
TLS Online TPP Program

#Question id: 294

#Biochemistry

Which of the following pairs of amino acids would you predict to only participate in Van der Waals interactions in the three dimensional folding of a protein: