Practice Questions

TLS Online TPP Program

#Question id: 10285

Some of the statements given shows the activity of PFK-1 and PFK-2, which of the following statements incorrectly shown these enzyme activity?

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

Fructose 2,6-bisphosphate is formed by phosphorylation of fructose 6-phosphate, catalyzed by phosphofructokinase-2 (PFK-2), and is broken down by fructose 2,6-bisphosphatase (FBPase-2)
fructose 2,6-bisphosphate is an allosteric activator of PFK-1 activity
PFK-1 is virtually inactive in the absence of fructose2,6-bisphosphate, fructose 2,6-bisphosphate has the opposite effect on FBPase-1: it reduces its affinity for its substrate, thereby slowing gluconeogenesis
cAMP-dependent protein kinase, which transfers a phosphoryl group from ATP to the bifunctional protein PFK-1/FBPase-1. Phosphorylation of this protein enhances its FBPase-1 activity and inhibits its PFK-1 activity

More Questions

TLS Online TPP Program

#Question id: 4317

#SCPH06 I Botany

Which of the following functions does the product of the p53 gene carry out?

TLS Online TPP Program

#Question id: 4721

#SCPH28 | Zoology

PKU, results from a recessive allele; persons homozygous for this allele, if untreated, exhibit mental retardation, blue eyes, and light skin color. This character categorized as

TLS Online TPP Program

#Question id: 19504

#SCPH05 I Biotechnology

The vertical columns in the periodic table are termed as ———-.

TLS Online TPP Program

#Question id: 19381

#SCPH28 | Zoology

Glyphosate resistance in plants can be generated by expressing in them transgenes that serve one of the following three purposes:

(1) Overproduction of EPSPS enzyme

(2) Encode an EPSPS enzyme that is tolerant to glyphosate

(3) Produce an enzyme that inactivates glyphosate

(4) Use a combination of the strategies (2) and (3)