Practice Questions

TLS Online TPP Program

#Question id: 34149

A scientist finds that infusion of growth hormone into the median eminence of the hypothalamus in experimental animals inhibits the secretion of growth hormone and concludes that this proves that growth hormone feeds back to inhibit GHRH secretion. Do you accept this conclusion?

#Unit 7. System Physiology – Animal

No, because growth hormone does not cross the blood-brain barrier.
No, because the infused growth hormone could be stimulating dopamine secretion.
No, because substances placed in the median eminence could be transported to the anterior pituitary.
Yes, because systemically administered growth hormone inhibits growth hormone secretion.

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TLS Online TPP Program

#Question id: 29423

#Unit 6. System Physiology – Plant

Different form of rubisco and their Quartenary structure is given

Match them correctly

TLS Online TPP Program

#Question id: 29424

#Unit 6. System Physiology – Plant

The structure of RUBISCO form one is

TLS Online TPP Program

#Question id: 29425

#Unit 6. System Physiology – Plant

Which of the following chaperone help to fold RUBISCO

TLS Online TPP Program

#Question id: 29426

#Unit 6. System Physiology – Plant

Kcat value of CO2 fixed per second per molecule of rubisco at 250C is

TLS Online TPP Program

#Question id: 29427

#Unit 6. System Physiology – Plant

Which of the following enzyme elicits a conformational change of rubisco that reduces its binding affinity for sugar phosphates in presence of light

TLS Online TPP Program

#Question id: 29428

#Unit 6. System Physiology – Plant

Thioredoxins occur in multiple forms and have conserved structures to interact with target enzymes , different types of thioredoxin in cells and their location is given