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Write complementary DNA and mRNA base sequences

10th grade (Year 11 in England) · 16 questions · Common Core: NGSS.HS-LS1-1, NGSS.HS-LS3-1 · England: GCSE Biology: Inheritance, variation and evolution (DNA structure)

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Date

Score/ 16

Question 1
One strand of DNA reads GGG CCT CAC. Write the complementary DNA strand (letters only).
Answer
2
Question 2
What holds the two strands of the DNA double helix together?
- A. metal atoms
- B. weak hydrogen bonds between complementary base pairs
- C. strong ionic bonds
- D. a layer of protein
Question 3
A DNA template strand reads TTC ATA. Write the mRNA sequence transcribed from it (letters only).
Answer
Question 4
One strand of DNA reads AGC CGT. Write the complementary DNA strand (letters only).
Answer
5
Question 5
Which scientists' X-ray image helped show DNA is a double helix?
- A. Rosalind Franklin's (with Maurice Wilkins's lab)
- B. Louis Pasteur's
- C. Gregor Mendel's
- D. Alexander Fleming's
Question 6
A DNA template strand reads TCG GCG. Write the mRNA sequence transcribed from it (letters only).
Answer
Question 7
One strand of DNA reads AGC GGG AGT. Write the complementary DNA strand (letters only).
Answer
8
Question 8
Which scientists' X-ray image helped show DNA is a double helix?
- A. Louis Pasteur's
- B. Alexander Fleming's
- C. Rosalind Franklin's (with Maurice Wilkins's lab)
- D. Gregor Mendel's
Question 9
A DNA template strand reads ACC GCC. Write the mRNA sequence transcribed from it (letters only).
Answer
Question 10
One strand of DNA reads GAC TAG. Write the complementary DNA strand (letters only).
Answer
11
Question 11
What holds the two strands of the DNA double helix together?
- A. a layer of protein
- B. strong ionic bonds
- C. metal atoms
- D. weak hydrogen bonds between complementary base pairs
Question 12
A DNA template strand reads ATC AAG CAC. Write the mRNA sequence transcribed from it (letters only).
Answer
Question 13
One strand of DNA reads ACG GGT ATC. Write the complementary DNA strand (letters only).
Answer
14
Question 14
What holds the two strands of the DNA double helix together?
- A. weak hydrogen bonds between complementary base pairs
- B. a layer of protein
- C. strong ionic bonds
- D. metal atoms
Question 15
A DNA template strand reads GGA GGA TCT. Write the mRNA sequence transcribed from it (letters only).
Answer
Question 16
One strand of DNA reads ATC GTC GTT. Write the complementary DNA strand (letters only).
Answer

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Answer key: Write complementary DNA and mRNA base sequences

1. CCCGGAGTG
2. B. weak hydrogen bonds between complementary base pairs
3. AAGUAU
4. TCGGCA
5. A. Rosalind Franklin's (with Maurice Wilkins's lab)
6. AGCCGC
7. TCGCCCTCA
8. C. Rosalind Franklin's (with Maurice Wilkins's lab)
9. UGGCGG
10. CTGATC
11. D. weak hydrogen bonds between complementary base pairs
12. UAGUUCGUG
13. TGCCCATAG
14. A. weak hydrogen bonds between complementary base pairs
15. CCUCCUAGA
16. TAGCAGCAA