Question

Receptors are proteins and crucial to body communication process. These receptors are embedded in

• A. Cell membrane
• B. Protein
• C. Endocrine gland
• D. Chromosomes

Answer 1

The Correct Option is A

Receptors are proteins that are crucial for body communication processes. These receptors are embedded in specific structures of the cell. Let's analyze the options:

Explanation: 

• Option C: Endocrine gland - This is incorrect. Endocrine glands secrete hormones but are not the location where receptors are embedded.
• Option D: Chromosomes - This is incorrect. Chromosomes are involved in genetic material storage and inheritance, not in receptor function.
• Option A: Cell membrane - Correct. Receptors are typically embedded in the cell membrane, where they interact with signaling molecules to transmit information into the cell.
• Option B: Protein - This is incorrect. While receptors are proteins, the option is too broad and does not specify where these receptors are embedded.

Conclusion:

The correct answer is Option A: Cell membrane, as receptors are embedded in the cell membrane to facilitate communication between the cell and external signals.

Answer 2

Receptors are specialized protein molecules found in the cell membrane of living cells. They are crucial for cellular communication, as they enable the cell to respond to various external signals, such as hormones, neurotransmitters, and other signaling molecules. The receptors on the cell membrane are specifically designed to bind with certain molecules and initiate a cellular response through a process called signal transduction. The interaction of receptors with signaling molecules can lead to various changes within the cell, such as gene expression, metabolic changes, or other physiological responses.

Why not the other options? 

(B) Protein: While receptors are proteins, they are not just free-floating proteins; they are embedded in the cell membrane, not in isolation. 
(C) Endocrine gland: Endocrine glands secrete hormones into the bloodstream, but they do not contain receptors themselves. Receptors are located on target cells that respond to these hormones. 
(D) Chromosomes: Chromosomes contain genetic material (DNA), not receptors for communication. Receptors are not embedded within chromosomes.