Antagonists are substances that bind to receptor sites to block the effects of natural messengers. They do not get transferred into the cell but inhibit the natural communication of the body.
Conclusion: The correct answer is (4) A and C.
Correctly label the speciation diagram below:
Match the following and choose the correct option from the following:
Note: The symbol indicates a stirrer for mixing (not to scale).
Match List-I with List-II.
Choose the correct answer from the options given below :