Molecules in Biology and Medicine
Molecules in Living Systems
Biomolecules
Living things rely on large and important molecules such as proteins, carbohydrates, lipids, and nucleic acids.
Protein Function
Proteins often act as enzymes, structural materials, transporters, and signal molecules. Their function depends on their molecular shape.
DNA as Information
DNA stores biological information using a chemical code. The order of its building blocks carries instructions used by cells.
Medicine and Molecular Science
Many medicines work by binding to molecules in the body and changing how they function.
Key Biomolecules
What often determines a protein's function?
Protein function depends strongly on its three-dimensional shape.
Correct answer: Its shape
What molecule stores genetic information?
DNA stores the instructions used by living cells.
Correct answer: DNA
Which biomolecule is most directly associated with enzymes?
Many enzymes are proteins.
Correct answer: Proteins
From Molecules to Health
-
1
Identify the molecule involved.
-
2
Consider its shape and interactions.
-
3
Ask how the molecule affects cell function.
-
4
Connect the molecular change to a body-level effect.
Name one major class of biomolecules.
Proteins are one major class of biomolecules, along with carbohydrates, lipids, and nucleic acids.
Correct answer: proteins