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Grade 9 Biomolecules Worksheet with Answers
Grade 9 (US) · Year 10 (UK) · Class 9 (India) · Science
Unit 1: Chemistry of Life & CellsBiomoleculesNGSS HS-LS1-6
Carbohydrates, lipids, proteins and nucleic acids, and how enzymes work. This free high school worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.
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Practice Sheetaethelsystems.comBiomolecules
Grade 9 · Science
Name
Class
Date
Learning goal: Biomolecules · NGSS HS-LS1-6
Directions: This worksheet has 2 parts. Read the instructions at the start of each part.
RememberMolecules of life
Match each clue to the right word. Write the letter in the box.
- 1What is glucose an example of?
- 2Which biomolecule includes fats and oils?
- 3Which biomolecule is the body's main quick energy source?
- 4What are the building blocks of nucleic acids?
- 5Which biomolecule makes up most enzymes?
- 6What are the building blocks of proteins?
- ALipids
- BAmino acids
- CNucleotides
- DCarbohydrate
- EProteins
- FCarbohydrates
Answer each question. Use full sentences where you can.
- 7
Why are lipids good for long-term energy storage?
- 8
What do enzymes do?
- 9
Which biomolecule forms most of the cell membrane?
- 10
What are the four main biomolecules?
- 11
Why can high fever damage enzymes?
- 12
Which biomolecule stores genetic information?
★ Challenge corner for fast finishers
Why does your breath make fog on a cold window?
How did I do?
Teacher's comments
Free printable worksheets with answer keys · aethelsystems.com/worksheets/science/9/biomolecules
Answer key — Biomolecules (Grade 9)
- 1.D — a carbohydrate (simple sugar)
- 2.A — lipids
- 3.F — carbohydrates
- 4.C — nucleotides
- 5.E — proteins
- 6.B — amino acids
- 7.they store more energy per gram than carbohydrates
- 8.speed up chemical reactions (act as catalysts)
- 9.lipids (phospholipids)
- 10.carbohydrates, lipids, proteins and nucleic acids
- 11.heat changes their shape (denatures them)
- 12.nucleic acids (DNA and RNA)
- ★water vapor in your breath condenses on the cold glass
Answer key (click to show)
- 1.D — a carbohydrate (simple sugar)
- 2.A — lipids
- 3.F — carbohydrates
- 4.C — nucleotides
- 5.E — proteins
- 6.B — amino acids
- 7.they store more energy per gram than carbohydrates
- 8.speed up chemical reactions (act as catalysts)
- 9.lipids (phospholipids)
- 10.carbohydrates, lipids, proteins and nucleic acids
- 11.heat changes their shape (denatures them)
- 12.nucleic acids (DNA and RNA)
- ★water vapor in your breath condenses on the cold glass (challenge corner)
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