Question

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What are protein. Describe the secondary structure of protein.
Carries 2 Marks
Class 11 CBSE

Answer 1

Answer:

protein is micromolecule which is composed of amino acid.

regular recurring arrengment of adjacent amino acid residues in space is known as secondary structure of protein. eg:- alpha-helix and beta -pleated

Answer 2

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Protein

~ It is polymers of it's monomers i. e, amino acid chain of 20 different amino acids joined by Peptide bond.

~ Protein is a nutrient found in food as meat, milk, eggs, and beans. the Process of protein synthesis is known as Translation.

~ Protein is the end product of central dogma of molecular biology. But the main site of protein synthesis is Endoplasmic reticulum.

~ it performs very important functions like DNA replication, response to stimuli, catalysing metabolic reactions, etc in an organism.

~ There are many types of protein present in our body

Structural protein such as collagen, elastin

Transport protein such as aquaporin

signaling protein such as hormones

stotage protein, such as ovalbumin

contractile protein, such as actin

enzymes or catalytic protein such as hexokinase

Genetic protein , such as nucleoprotein

defence protein, such as immunoglobulin

hormonal proteins such as insulin, glucagon