Practice Questions

TLS Online TPP Program

#Question id: 9178

A fish swimming into an estuary from a river would have which of the following as its greatest physiological challenge?

#9. Diversity of Life Forms

The high water flow would make the fish expend more energy.
The low oxygen content would give the fish difficulty in swimming aerobically.
The temperature change would stress the fish by denaturing its proteins.
The change in water solute content would challenge the osmotic balance of the fish.

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#Question id: 19345

#12. Applied Biology

The magnetoelectric and piezoelectric are types of _____ based biosensors?

TLS Online TPP Program

#Question id: 23913

#Aptitude

tree, which is popular in social forestry programme in India, is:

TLS Online TPP Program

#Question id: 12715

#6. System Physiology – Plant

Early-acting stress sensors provide the initial signal for the stress response, several possible examples of stress-sensing mechanisms that act early in the pathway have been identified. They include:

A) calcium channel (cyclic nucleotide-gated calcium channel) that senses changes in temperature

B) A kinase (SnRK1, a SNF1-related kinase 1) that senses energy depletion during stress

C) A plasma membrane histidine kinase (ATHK1) that senses osmotic stress

D) A leucine rich repeat receptor kinase (LRRK) protein (Srlk)

E) An endoplasmic reticulum transmembrane sensor inositol-requiring enzyme 1 (IRE1)

And activating several response after sensing these mechanisms;

i) activates hundreds of stress-response transcripts

ii) that functions as an upstream regulator of salinity responses in Arabidopsis

iii) that is required for acclimation to heat stress

iv) that is required for heat tolerance in plants

v) activates ABA-dependent and ABA-independent responses

Which of the following is the correct match the activating response with its sense mechanism;

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#Question id: 5017

#11. Evolution and Behavior

Arrange these events from earliest to most recent.

1. emission of lava in what is now Siberia at time of Permian extinctions

2. emission of lava that solidified at the same time as iron-bearing terrestrial rocks began to rust

3. emission of lava that solidified at the same time as rusted iron precipitated from seawater

4. emission of lava in what is now India at time of Cretaceous extinctions

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#Question id: 435

#1. Molecules and their Interaction Relevant to Biology

What defines a near-equilibrium reaction?