MCQ
Glucagon hormone is secreted by
- APituitary
- BAdrenal
- CBeta cells of islets of Langerhans
- ✓Alpha cells of islets of Langerhans
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Statement $I$ : Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys enzymatic activity because proteins are denatured by heat.
Statement $II$ : When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor.
In the light of the above statements, choose the correct answer from the options given below :