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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Question 1
Where is DNA found in an animal cell?
- A. in the cell wall
- B. mainly in the nucleus
- C. outside the cell
- D. in the chloroplasts
Question 2
Human body cells have 23 pairs of chromosomes. How many chromosomes are in an egg cell?
Answer
Question 3
Where is DNA found in an animal cell?
- A. in the chloroplasts
- B. mainly in the nucleus
- C. outside the cell
- D. in the cell wall
Question 4
Human body cells have 23 pairs of chromosomes. How many chromosomes are in a sperm cell?
Answer
Question 5
What shape is a DNA molecule?
- A. a single straight line
- B. a ring of six atoms
- C. a cube
- D. a double helix
Question 6
Human body cells have 23 pairs of chromosomes. How many chromosomes are in a skin cell?
Answer
Question 7
How many chromosomes are in a normal human body cell?
- A. 12
- B. 92
- C. 46 (23 pairs)
- D. 23
Question 8
Human body cells have 23 pairs of chromosomes. How many chromosomes are in an egg cell?
Answer
Question 9
How many chromosomes are in a normal human body cell?
- A. 46 (23 pairs)
- B. 12
- C. 92
- D. 23
Question 10
Human body cells have 23 pairs of chromosomes. How many chromosomes are in a sperm cell?
Answer
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