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The diagram shows a model involving DNA - HSC - SSCE Biology - Question 23 - 2015 - Paper 1

Question 23

The diagram shows a model involving DNA. (a) What process is being modelled? (b) IDENTIFY TWO structural features of the DNA molecule which are NOT shown in this m... show full transcript

Worked Solution & Example Answer:The diagram shows a model involving DNA - HSC - SSCE Biology - Question 23 - 2015 - Paper 1

Step 1

What process is being modelled?

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Answer

The process being modelled is DNA replication. This is the biological process of producing two identical replicas of DNA from one original DNA molecule.

Step 2

IDENTIFY TWO structural features of the DNA molecule which are NOT shown in this model.

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Answer

The double helix structure - This feature describes how the two strands of DNA twist around each other, forming a helical shape.
The sugar-phosphate backbone - This is the structural framework of nucleic acids, composed of alternating sugar and phosphate groups that form the sides of the DNA ladder.

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