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What is the primary structure of DNA composed of?

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Question: What is the primary structure of DNA composed of?

Options:

  1. A double helix of nucleotides
  2. A single strand of amino acids
  3. A triple helix of sugars
  4. A circular structure of lipids

Correct Answer: A double helix of nucleotides

Solution: 

The primary structure of DNA is composed of a double helix formed by nucleotides, which consist of a sugar, phosphate group, and nitrogenous base.

What is the primary structure of DNA composed of?

Practice Questions

Q1
What is the primary structure of DNA composed of?
  1. A double helix of nucleotides
  2. A single strand of amino acids
  3. A triple helix of sugars
  4. A circular structure of lipids

Questions & Step-by-Step Solutions

What is the primary structure of DNA composed of?
  • Step 1: Understand that DNA is a molecule that carries genetic information.
  • Step 2: Know that the primary structure of DNA is made up of smaller units called nucleotides.
  • Step 3: Learn that each nucleotide has three parts: a sugar, a phosphate group, and a nitrogenous base.
  • Step 4: Recognize that these nucleotides link together to form a long chain.
  • Step 5: Understand that the chain of nucleotides twists into a shape called a double helix.
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