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DNA, genes and chromosomes

8th grade (Year 9 in England) · 10 questions · Common Core: NGSS.MS-LS3-1, NGSS.HS-LS1-1, NGSS.HS-LS3-1 · England: KS3 Biology: Genetics and evolution, KS4 Combined Science: Evolution, inheritance and variation

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Date

Score/ 10

1
Question 1
What is a gene?
- A. a disease
- B. a section of DNA that codes for a protein
- C. a type of cell
- D. a whole chromosome
Question 2
Human body cells have 23 pairs of chromosomes. How many chromosomes are in a sperm cell?
Answer
3
Question 3
Where is DNA found in an animal cell?
- A. in the chloroplasts
- B. in the cell wall
- C. outside the cell
- D. mainly in the nucleus
Question 4
Human body cells have 23 pairs of chromosomes. How many chromosomes are in an egg cell?
Answer
5
Question 5
How many chromosomes are in a normal human body cell?
- A. 46 (23 pairs)
- B. 12
- C. 23
- D. 92
Question 6
Human body cells have 23 pairs of chromosomes. How many chromosomes are in a sperm cell?
Answer
7
Question 7
Rosalind Franklin's X-ray image helped scientists discover…
- A. penicillin
- B. the shape of the Earth
- C. the structure of DNA
- D. the first vaccine
Question 8
Human body cells have 23 pairs of chromosomes. How many chromosomes are in a muscle cell?
Answer
9
Question 9
Rosalind Franklin's X-ray image helped scientists discover…
- A. the shape of the Earth
- B. the first vaccine
- C. penicillin
- D. the structure of DNA
Question 10
Human body cells have 23 pairs of chromosomes. How many chromosomes are in a muscle cell?
Answer

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