Home
Class 12
CHEMISTRY
Assertion (A) Chemical messenger gives m...

Assertion (A) Chemical messenger gives message to the cell without entering the cell.
Reason (R) Chemical messenger is received at the binding site of receptor proteins.

A

Assertion and reason both are correct statements but reason does not explain assertion.

B

Assertion and reason both are correct and reason explains the assertion.

C

Both assertion and reason are wrong statements.

D

Assertion is correct statement reason is wrong statement.

Text Solution

Verified by Experts

The correct Answer is:
B
Assetion and reason both are correct and reason explains the assertion. Chemical messenger gives message to the cell without entering the cell because it is received at the binding site of receptor proteins.
Promotional Banner

Topper's Solved these Questions

  • CHEMISTRY IN EVERYDAY LIFE

    NCERT EXEMPLAR ENGLISH|Exercise Long Answer Type Qns|4 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    NCERT EXEMPLAR ENGLISH|Exercise Match the Column|6 Videos

  • CHEMICAL KINETICS

    NCERT EXEMPLAR ENGLISH|Exercise LONG ANSWER TYPE QUESTIONS|5 Videos

  • COORDINATION COMPOUNDS

    NCERT EXEMPLAR ENGLISH|Exercise Long Answer Type Question|5 Videos

Similar Questions

Explore conceptually related problems

Chemical messengers of immune cells are

Which of the following statements are incorrect about receptor proteins ? a.Majority of receptor protein are embedded in the cell membranes b.The active site of receptor proteins opens on the inside region of the cell c.Chemical messengers are received at the binding sites of receptor proteins d.Shape of receptor doesn't change during attachment of messenger

Assertion : Chemical messengers are received at the binding sites of receptor proteins. Reason : Chemical messenger gives messages to the cell without entering the cell.

Assertion (A) Receptor protein show sectivity for one chemical messenger over the other. Reason (R) Chemical messenger binds to the receptor site and inhibits its natural function.

Assertion (A: Cell constant is the EMF of a cell. Reason (R): Cell constant is determined by using saturated KCl solution.

Assertion (A) All chemicals added to food items are called food preservatives. Reason (R) All these chemicals increase the nutritive value of the food.

Assertion (A) E_("cell") should have a positive value for the cell to function, Reason(R) E_("cathode")ltE_("anode")

Assertion (A) : Cancer cells are virtually immortal until the body in which they reside dies. Reason (R): Cancer is caused by damage to genes regulating the cell they division cycle.

Assertion: Chloragogen cells are considered analogous to the liver of vertebrates. Reason: Because it is concerned with the storage of reserve food, deamination of proteins, formation of urea, etc.

Assertion (A) Chemical messengers are chemicals that enable communications of message between tow neurons or between or between neurons and muscles. Reason (R) Chemicals enter the cell through receptor.