36.6k views
5 votes
Which molecule is a first messenger but not a second messenger

1 Answer

1 vote

Answer:

Hormones act as first messenger but not as second messengers.

Step-by-step explanation:

Second messenger act as signaling molecule which are secreted in response to various biological signals generated by first messenger such as hormones,neurotransmitters etc.Second messengers include various bioactive molecules such as cyclic AMP(cAMP),cyclic GMP(cGMP),inositol triphosphate(IP3),diacylglycerol(DAG),calcium ions(Ca2+) etc.

Hormones are extracellular signaling molecules whereas second messengers are intracellular signaling molecules.

User Vedankita Kumbhar
by
8.4k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.