Biology Chemical Coordination ETEA 2019
PMDC Verified Question 41 of 50
Chemically hormones are:
A
Carbohydrates
B
Proteins
C
Steroids
D
Both Proteins and Steroids
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Both Proteins and Steroids
Concept:

Hormones are organic chemical messengers secreted by endocrine glands directly into the bloodstream to regulate specific target organs.

Solution:

  • Hormones have diverse chemical structures but are generally classified into three main categories: peptides/proteins (e.g., insulin, glucagon), steroids (e.g., estrogen, testosterone), and amino acid derivatives (e.g., epinephrine).


  • Therefore, hormones are chemically proteins and steroids.


Why other options are incorrect:

Carbohydrates (like glucose or glycogen) serve as primary energy sources or structural components, not as long-distance endocrine signaling molecules.

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