Question

how glucagon and insulin antagonistic in nature?

Answer 1

They are antagonistic in nature because of following reasons

When sugar concentration increases in blood pancreas secretes insulin which converts blood sugar to glycogen(stored sugar) thus sugar level in blood decreases.

When sugar concentration decreases in blood glucagon is secreted which converts glycogen (stored sugar) to simple sugar so that sugar concentration increases in blood.

In this way they are antagonistic in nature.

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Answer 2

NCERT based Answer for Class 11 Biology Students

Insulin lowers blood glucose level by:

• Accelerating transport of glucose into cells.

• Converting glucose into glycogen (glycogenesis) in liver.

• Decreasing glycogenolysis and gluconeogenesis.

Glucagon raises blood glucose level (hyperglycemia) by:

• Accelerating breakdown of glycogen into glucose in liver (glycogenolysis).

• Conversion of other nutrinets into glucose in liver (gluconeogenesis).

• Releasing glucose into blood.

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