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What type of bond connects the sugar and phosphate groups in a DNA strand?

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Question: What type of bond connects the sugar and phosphate groups in a DNA strand?

Options:

  1. Hydrogen bond
  2. Ionic bond
  3. Covalent bond
  4. Peptide bond

Correct Answer: Covalent bond

Solution: 

Covalent bonds connect the sugar and phosphate groups, forming the backbone of the DNA strand.

What type of bond connects the sugar and phosphate groups in a DNA strand?

Practice Questions

Q1
What type of bond connects the sugar and phosphate groups in a DNA strand?
  1. Hydrogen bond
  2. Ionic bond
  3. Covalent bond
  4. Peptide bond

Questions & Step-by-Step Solutions

What type of bond connects the sugar and phosphate groups in a DNA strand?
Correct Answer: Covalent bonds
  • Step 1: Understand that DNA is made up of smaller units called nucleotides.
  • Step 2: Each nucleotide has three parts: a sugar, a phosphate group, and a nitrogenous base.
  • Step 3: The sugar and phosphate groups are connected to form a long chain.
  • Step 4: The connection between the sugar and phosphate groups is made by a type of bond.
  • Step 5: This bond is called a covalent bond.
  • Step 6: Covalent bonds are strong and help hold the DNA structure together.
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