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Grade 9 DNA, RNA & Protein Synthesis Worksheet with Answers

Grade 9 (US) · Year 10 (UK) · Class 9 (India) · Biology

Unit 2: GeneticsDNA & Protein SynthesisNGSS HS-LS1-1

DNA structure, base pairing, transcription and translation — including writing complementary strands. 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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DNA, RNA & Protein Synthesis

Grade 9 · Biology

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Class

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Learning goal: DNA & Protein Synthesis · NGSS HS-LS1-1

Directions: This worksheet has 2 parts. Read the instructions at the start of each part.

Example

Which base pairs with cytosine (C)?

Answer: guanine (G)

RememberDNA base pairs

ATCGTAGCATA pairs with TC pairs with GDNA → RNA → protein(in RNA, U replaces T)
Part A

Match each clue to the right word. Write the letter in the box.

  1. 1Transcribe this DNA template strand into mRNA: ATGCCACGA
  2. 2Transcribe this DNA template strand into mRNA: TGGCCCAGA
  3. 3Transcribe this DNA template strand into mRNA: AATGGGCCT
  4. 4Transcribe this DNA template strand into mRNA: TCCCTAGAC
  5. 5Transcribe this DNA template strand into mRNA: TTAAGCTGG
  6. 6Write the complementary DNA strand for: TACGGCAGC
  • AACCGGGUCU
  • BAAUUCGACC
  • CUACGGUGCU
  • DATGCCGTCG
  • EAGGGAUCUG
  • FUUACCCGGA
Part B

Answer each question. Use full sentences where you can.

  1. 7

    What is translation?

  2. 8

    Where is DNA found in a eukaryotic cell?

  3. 9

    Write the complementary DNA strand for: CACTCACAT

  4. 10

    Transcribe this DNA template strand into mRNA: CGAAGGGAG

  5. 11

    Write the complementary DNA strand for: CGGTGCGAG

  6. 12

    Transcribe this DNA template strand into mRNA: GGCAGCTCG

★ Challenge corner for fast finishers

Why does a spinning ice skater spin faster when she pulls her arms in?

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Teacher's comments

Free printable worksheets with answer keys · aethelsystems.com/worksheets/biology/9/dna_protein

Answer key (click to show)
  1. 1.C — UACGGUGCU
  2. 2.A — ACCGGGUCU
  3. 3.F — UUACCCGGA
  4. 4.E — AGGGAUCUG
  5. 5.B — AAUUCGACC
  6. 6.D — ATGCCGTCG
  7. 7.reading mRNA to build a protein at the ribosome
  8. 8.mainly in the nucleus (also mitochondria)
  9. 9.GTGAGTGTA
  10. 10.GCUUCCCUC
  11. 11.GCCACGCTC
  12. 12.CCGUCGAGC
  13. ★conservation of angular momentum (challenge corner)

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