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TLS Online TPP Program

#Question id: 4902

Leber hereditary optic neuropathy (LHON) is mitochondrial diseases present in family. Which of the following observation is correct?

#Unit 8. Inheritance Biology

  1. LHON present in female only, none of the male affected with this diseased

  2. LHON trait is passed from mother to all children, sons and daughters alike.

  3. LHON trait shows criss cross inheritance

  4. LHON trait is passed from father to all children

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TLS Online TPP Program

#Question id: 10439

#Unit 6. System Physiology – Plant

Cryptochromes are blue-light photoreceptors that mediate several blue-light responses, including___
TLS Online TPP Program

#Question id: 19039

#Unit 13. Methods in Biology

In chromatography, the stationary phase can be ___________ supported on a solid.
TLS Online TPP Program

#Question id: 2581

#Unit 2. Cellular Organization

Match the following toxins (Column I) with their effects (Column II) on actin.

Column I

Column II

A. Cytochalasin D

i. Enhances nucleation by binding and stabilizing actin dimers and thereby lowering the critical concentration.

B. Latrunculin

ii. Binds at the interface between subunits in

F-actin, locking adjacent subunits together and preventing actin filaments from depolymerizing.

C. Jasplakinolide

iii. Depolymerizes actin filaments by binding to the (+) end of F-actin, where it blocks further addition of subunits.

D. Phalloidin

iv. Binds and sequesters G-actin, inhibiting it from adding to a filament end.

TLS Online TPP Program

#Question id: 11746

#Unit 6. System Physiology – Plant

Sieve element sap is rich in sugars and other organic molecules, These molecules represent an energy investment for the plant. How their loss be prevented when sieve elements are damaged?
TLS Online TPP Program

#Question id: 11525

#Unit 6. System Physiology – Plant

Coleoptiles are very sensitive to light, especially