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Proteins: Structure and Function Quiz

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Questions and Answers

What is the significance of proteins in living systems?

They are only found in certain parts of the cell and have limited functions.

They are the most abundant inorganic molecules.

They are primarily responsible for energy production in cells.

They make up about 50% of the cellular dry weight and are essential for the structure and function of life. (correct)

Where do proteins occur in the cell?

Exclusively in the cytoplasm

Only in the nucleus

Mainly in the cell wall

In every part of the cell (correct)

What do proteins form the fundamental basis of in living systems?

Cellular waste removal

Energy production

Cellular structure and function (correct)

Genetic material

What is the term protein derived from?

Greek word proteios, meaning first place Signup and view all the answers

How are secondary proteins characterized?

Alpha helix or Beta plated sheets Signup and view all the answers

What types of bonds are present in tertiary protein structure?

Inter disulfide bond, Inter hydrogen bonds, Hydrophobic forces, Ionic bonds Signup and view all the answers

What did G.J.Mulder find proteins could do when heated?

Coagulate Signup and view all the answers

On what basis are proteins classified?

Structure and function Signup and view all the answers

Which functional group is acidic in nature in amino acids?

Carboxyl group (-COOH) Signup and view all the answers

Which amino acids are classified as aliphatic amino acids?

Valine, leucine, isoleucine Signup and view all the answers

Which type of amino acid cannot be synthesized in the body and must be obtained from the diet?

Essential amino acids Signup and view all the answers

Which group is present in acidic amino acids such as aspartic acid and glutamic acid?