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131. Differentiate between Hydrolase and lyase.

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132. Write notes on competitive inhibition.

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133. What are gums made of ? Is Fevicol different ?

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134. Can you attempt building models of biomolecules using commercially available atomic models (Ball and Stick Models) ?

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135. How the enzymes speed up the rate of reaction ?

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136. Attempt titrating an amino acid against a weak base and discover the number of dissociating (ionizable) functional groups in the amino acid.

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137. Describe various characteristics of enzymes.

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Proteins that are used as therapeutic agents are as follows:

1. Thrombin and fibrinogen – They help in blood clotting.

2. Insulin – It is used in diabetes as it helps in maintaining blood glucose level in the body.

3. Renin – It helps in osmoregulation.

4. Lactoferrin - It is used as an anitimicrobial.

5. Trypsin - It is used in pharmaceutical.

Proteins are also commonly used in the manufacture of cosmetics, biological buffers, enzymes etc.

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139. Describe. lock and key hypothesis.

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140. Find out a qualitative test for proteins, fats, oils, amino acids and test any fruit juice, saliva, sweat and urine for them.

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