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TLS Online TPP Program

#Question id: 10303

During glycolysis, if radiolabelled the glucose at 3 or 4 carbon then what will be the correct prediction about radiolabelling in the cycle?

#Unit 6. System Physiology – Plant

  1. Glucose radiolabelling carbon do not enter into the TCA cycle

  2. Pyruvate 1 carbon will not be radiolabelled
  3. pyruvate 1 carbon will be radiolabelled and enter into the TCA cycle
  4. in citric acid cycle, only carboxylic group of citrate will be radiolabelled
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TLS Online TPP Program

#Question id: 24210

#Unit 1. Molecules and their Interaction Relevant to Biology

The human genome encodes four different hexokinases (I to IV), all of which catalyze the same reaction. If Two or more enzymes that catalyze the same reaction but are encoded by different genes are called to be
TLS Online TPP Program

#Question id: 24209

#Unit 1. Molecules and their Interaction Relevant to Biology

Two enzyme having same reaction mechanism using same cofactor such as PDC and KDC
TLS Online TPP Program

#Question id: 24208

#Unit 1. Molecules and their Interaction Relevant to Biology

What is the true substrate for hexokinase
TLS Online TPP Program

#Question id: 14146

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the following

Column A Column B 
A. Cyanide1. Inhibit cytochrome oxidase
B. Piericidin A2. Prevent electron transfer from Fe-S center to ubiquinone              
C. Antimycin A        3. Blocks electron transfer from cytochrome b to cytochrome c1
D. Valinomycin4. K+ ionophore
TLS Online TPP Program

#Question id: 543

#Unit 1. Molecules and their Interaction Relevant to Biology

If glucose labeled with 14C at C-1 (the aldehyde carbon) were metabolized in the liver, the first radioactive pyruvate formed would be labeled in:
TLS Online TPP Program

#Question id: 542

#Unit 1. Molecules and their Interaction Relevant to Biology

Hamsters love to run on exercise wheels. Prolonged running at a high rate of speed requires ATP. Could a hamster with a defective gene for the enzyme lactate dehydrogenase meet the extra ATP demand for prolonged, fast wheel-running by maintaining a high rate of glycolysis? Why or why not?