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Cell Biology: Physical Properties of Protoplasm

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Cell Biology: Physical Properties of Protoplasm

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Questions and Answers

What do we call substances that are water-fearing?

Hydrophilic

Surface tension

Hydrophobic (correct)

Non polar covalent

What property of water allows it to resist external force at the surface?

Specific heat

Surface tension (correct)

Hydrogen bonding

Cohesion

What gives water a high specific heat and results in a very stable temperature?

Cohesion between water molecules

Hydrophilic nature of water

Hydrogen bonding in water (correct)

Adhesion of water molecules to other substances

Why does a paper clip float on water?

Due to high surface tension of water Signup and view all the answers

What is the role of protoplasm in cell growth?

Protoplasm helps in increasing the height and number of cells Signup and view all the answers

Which physical property of protoplasm is due to the folding and unfolding nature of proteins?

Elasticity and Contractility Signup and view all the answers

How does cyclosis contribute to cellular functioning?

It carries nutrients, proteins, and organelles through the cell Signup and view all the answers

What did J.E. Purkinje propose in the year 1835?

The term 'protoplasm' Signup and view all the answers

What effect does protoplasm exhibit due to its colloidal nature?

Tyndall Effect (light scattering by particles in a colloid) Signup and view all the answers

What is the main composition of protoplasm?

Plasma membrane, nucleus, and cytoplasm Signup and view all the answers

Which substances are present within the protoplasm?

Carbohydrates, lipids, proteins, and nucleic acid Signup and view all the answers

Which term is now commonly used in place of 'protoplasm'?

Cytoplasm Signup and view all the answers