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Grade 9 Biomolecules Worksheet with Answers
Grade 9 (US) · Year 10 (UK) · Class 9 (India) · Biology
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 · Biology
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.
- 1Which biomolecule forms most of the cell membrane?
- 2What is glucose an example of?
- 3Which biomolecule is the body's main quick energy source?
- 4What are the building blocks of proteins?
- 5Which test turns blue-black with starch?
- 6Which biomolecule stores genetic information?
- ANucleic acids
- BLipids
- CAmino acids
- DCarbohydrate
- EIodine test
- FCarbohydrates
Answer each question. Use full sentences where you can.
- 7
Why can high fever damage enzymes?
- 8
Which biomolecule includes fats and oils?
- 9
What do enzymes do?
- 10
Why are lipids good for long-term energy storage?
- 11
What are the four main biomolecules?
- 12
Which biomolecule makes up most enzymes?
★ Challenge corner for fast finishers
On the Moon (no air), a hammer and a feather are dropped together. Which lands first?
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Teacher's comments
Free printable worksheets with answer keys · aethelsystems.com/worksheets/biology/9/biomolecules
Answer key — Biomolecules (Grade 9)
- 1.B — lipids (phospholipids)
- 2.D — a carbohydrate (simple sugar)
- 3.F — carbohydrates
- 4.C — amino acids
- 5.E — the iodine test
- 6.A — nucleic acids (DNA and RNA)
- 7.heat changes their shape (denatures them)
- 8.lipids
- 9.speed up chemical reactions (act as catalysts)
- 10.they store more energy per gram than carbohydrates
- 11.carbohydrates, lipids, proteins and nucleic acids
- 12.proteins
- ★they land at the same time
Answer key (click to show)
- 1.B — lipids (phospholipids)
- 2.D — a carbohydrate (simple sugar)
- 3.F — carbohydrates
- 4.C — amino acids
- 5.E — the iodine test
- 6.A — nucleic acids (DNA and RNA)
- 7.heat changes their shape (denatures them)
- 8.lipids
- 9.speed up chemical reactions (act as catalysts)
- 10.they store more energy per gram than carbohydrates
- 11.carbohydrates, lipids, proteins and nucleic acids
- 12.proteins
- ★they land at the same time (challenge corner)
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