TLS Online TPP Program

#Question id: 2330


The cell theory states that

#SCPH06 I Botany
  1. cells arise spontaneously.

  2. cells arise from preexisting cells.

  3. cells are the smallest unit of life.

  4. both b and c.

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TLS Online TPP Program

#Question id: 10280

#SCPH05 I Biotechnology

The enzyme of glycolytic pathway that forms fructose 1,6-bisphosphate is called phosphofructokinase-1 (PFK-1), which statements can’t distinguish it from a second enzyme (PFK-2) Phosphofructokinase-2.

TLS Online TPP Program

#Question id: 10281

#I Life Science/ Life Sciences Group – I-V

Gluconeogenesis is particularly important in plants such as the castor oil plant Ricinus communis and sunflower that store carbon in which form .

TLS Online TPP Program

#Question id: 10281

#SCPH05 I Biotechnology

Gluconeogenesis is particularly important in plants such as the castor oil plant Ricinus communis and sunflower that store carbon in which form .

TLS Online TPP Program

#Question id: 10282

#I Life Science/ Life Sciences Group – I-V

In the glycolytic reaction one of the step is catalyzed by ATP-dependent phosphofructokinase is essentially irreversible, at the same step which one of the following enzyme used in gluconeogenesis, both of the enzymes are ATP dependent.

TLS Online TPP Program

#Question id: 10282

#SCPH05 I Biotechnology

In the glycolytic reaction one of the step is catalyzed by ATP-dependent phosphofructokinase is essentially irreversible, at the same step which one of the following enzyme used in gluconeogenesis, both of the enzymes are ATP dependent.

TLS Online TPP Program

#Question id: 10283

#I Life Science/ Life Sciences Group – I-V

How to Phosphofructokinase-1 (PFK-1) and Fructose 1,6-Bisphosphatase are reciprocally regulated ?

a) ATP inhibits PFK-1 by binding to an allosteric site and lowering the affinity of the enzyme for its substrate fructose 6-phosphate

b) citrate is also an allosteric regulator of PFK-1, high citrate concentration increases the inhibitory effect of ATP

c) FBPase-1, is strongly inhibited (allosterically) by AMP; when the cell’s supply of ATP is low (corresponding to high AMP), the ATP-requiring synthesis of glucose slows

d) AMP inhibits PFK-1 by binding to an allosteric site and lowering the affinity of the enzyme for its substrate fructose 6-phosphate

Which of the following statements of regulation of enzyme is correct?