Practice Questions

TLS Online TPP Program

#Question id: 892

Assisted protein folding is mediated by a group of proteins known as chaperons, which of the following statements is incorrectly reperesents chaperon activity;

#Unit 1. Molecules and their Interaction Relevant to Biology

chaperon help to fold, unfolded and partially folded polypeptide chains to disrupt the improper association of exposed hydrophobic segments
All molecular chaperones operate by binding to an unfolded or aggregated protein’s, and molecular chaperon donot requires ATP for their activity
molecular chaperones function to lift folding polypeptides out of the false minima in their folding funnels
molecular chaperones were first described as heat shock proteins (Hsp) because their rate of synthesis is increased at elevated temperatures

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TLS Online TPP Program

#Question id: 17666

#Unit 11. Evolution and Behavior

In the Mesozoic era, periods included;

i) Increase of dicotyledons

ii) Seeds ferns disappear

iii) Rapid development of angiosperms

iv) Spread of cycads and conifers

v) Gymnosperms declined

Find out the correct match of given period with their plants diversification events;

TLS Online TPP Program

#Question id: 17667

#Unit 11. Evolution and Behavior

Jurassic periods belong to the Mesozoic era has various characteristics of invertebrates and vertebrates animals except;

TLS Online TPP Program

#Question id: 17810

#Unit 11. Evolution and Behavior

Triassic period of Mesozoic era has characteristics by___

TLS Online TPP Program

#Question id: 18006

#Unit 11. Evolution and Behavior

During which geological period origin, first forests; lands plants well established?

TLS Online TPP Program

#Question id: 18007

#Unit 11. Evolution and Behavior

The following geological eras mark the advent of important events in the history of earth- origin of first vertebrates armored fishes, origin of First reptiles, origin of first dinosaurs;

a) Triassic b) Pennsylvanian

c) Ordovician d) Cambrian

Identify the correct match of the events with the geological era;

TLS Online TPP Program

#Question id: 18072

#Unit 11. Evolution and Behavior

First invertebrates insects fossil appeared in which of the following geological ages?

a) Mesozoic b) Jurassic

c) Paleozoic d) Devonian

e) Permian f) Pennsylvanian

Which of the following combinations give the best answer?