3 (a) Use numbers from the box to complete the sentences - Edexcel - GCSE Biology - Question 3 - 2018 - Paper 1
Question 3
3 (a) Use numbers from the box to complete the sentences.
The nucleus of a human muscle cell contains __________ chromosomes that are made of DNA.
In DNA, there a... show full transcript
Worked Solution & Example Answer:3 (a) Use numbers from the box to complete the sentences - Edexcel - GCSE Biology - Question 3 - 2018 - Paper 1
Step 1
Use numbers from the box to complete the sentences.
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Answer
The nucleus of a human muscle cell contains 46 chromosomes that are made of DNA.
In DNA, there are 4 different bases.
Step 2
Which of the following best describes the shape of a DNA molecule?
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Answer
D. two strands coiled to form a double helix.
Step 3
Describe the contribution that Rosalind Franklin made to the understanding of DNA structure.
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Answer
Rosalind Franklin conducted X-ray diffraction studies on DNA. She examined and captured images of the DNA structure, which provided critical evidence that DNA formed a double helix.
