TLS Online TPP Program

#Question id: 597


The Km values for enzyme reactions such as A + B → C + D

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. cannot be determined using the Lineweaver-Burk plot analysis.

  2. can be determined by holding one (A or B) at high concentration, while varying the concentration of the other substrate.

  3. can be determined for one substrate and not the other.

  4. do not indicate the efficiency of the enzyme.

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TLS Online TPP Program

#Question id: 27946

#Unit 1. Molecules and their Interaction Relevant to Biology

The overall equation for glycolysis is

TLS Online TPP Program

#Question id: 27947

#Unit 1. Molecules and their Interaction Relevant to Biology

For each molecule of glucose degraded to pyruvate, two molecules of ATP are generated from ADP and Pi, and two molecules of NADH are produced by the reduction of NAD+. The hydrogen acceptor in this reaction is NAD+  this NAD+ bound to a

TLS Online TPP Program

#Question id: 27948

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following are the priming reactions of the glycolysis
a. Fructose 6-phosphate  1,6-bisphosphate
b. Glucose →  Glucose 6-phosphate
c. Glucose 6-phosphate → Fructose 6-phosphate
d  Glyceraldehyde 3-phosphate → 1,3-Bisphosphoglycerate

TLS Online TPP Program

#Question id: 27949

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following reaction is catalyzed by enzyme phosphohexose isomerase (phosphoglucose isomerase)

TLS Online TPP Program

#Question id: 27950

#Unit 1. Molecules and their Interaction Relevant to Biology

Some of the properties of Hexokinases I, II, III & IV is given

a. Hexokinases I, II, and III shows hyperbolic curve of glucose binding while Hexokinase IV shows sigmoidal curve 

b. Accumulation of glucose 6-phosphate inhibits hexokinases I–III by feedback mechanism 

c. Accumulation of glucose 6-phosphate allosterically inhibits hexokinases I–III.

d. The allosteric effector of Hexokinase IV is fructose 6-phosphate.

Which of the following is incorrect  

TLS Online TPP Program

#Question id: 27951

#Unit 1. Molecules and their Interaction Relevant to Biology

Fructose 6-phosphate + ATP phosphate  → Fructose 1,6-bisphosphate + ADP bisphosphate + ADP
a.This is a second priming reaction of glycolysis 
b. This reaction can be inhibited by increasing the concentration of citrate and ATP
c. This reaction can be inhibited by increasing the concentration ADP, AMP & F2,6BP
d. This reaction can be activated by increasing the concentration ADP, AMP & F2,6BP

Choose the correct option regarding the given reaction