2.1 The diagram below represents a portion of a DNA molecule - NSC Life Sciences - Question 2 - 2019 - Paper 2
Question 2
2.1 The diagram below represents a portion of a DNA molecule.
2.1.1 Identify B and C.
2.1.2 Name:
(a) Monomer A
(b) TWO scientists who received a Nobel prize... show full transcript
Worked Solution & Example Answer:2.1 The diagram below represents a portion of a DNA molecule - NSC Life Sciences - Question 2 - 2019 - Paper 2
Step 1
Identify B and C.
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Answer
B is a Nitrogen base, and C is a Phosphate.
Step 2
Name:
(a) Monomer A
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Answer
The monomer A is a Nucleotide.
Step 3
Name:
(b) TWO scientists who received a Nobel prize for discovering the DNA molecule
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Answer
James Watson and Francis Crick.
Step 4
Name:
(c) ONE organelle in a cell where DNA is located
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Answer
Nucleus.
Step 5
Describe how a mutation on DNA may change the structure of a protein.
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Answer
A mutation in DNA can lead to a change in the DNA code, which may affect the mRNA that is synthesized during transcription. This altered mRNA will code for different tRNA, which can then lead to the incorporation of different amino acids during translation. Consequently, the resulting protein may have a different structure, which can affect its function.
Step 6
Tabulate TWO structural differences between a monomer of RNA and a monomer of DNA.
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