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In a double helix, the two strands of DNA are held together by which type of bon
In a double helix, the two strands of DNA are held together by which type of bond?
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Q1
In a double helix, the two strands of DNA are held together by which type of bond?
Covalent bond
Hydrogen bond
Ionic bond
Disulfide bond
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Hydrogen bonds between complementary nitrogenous bases hold the two strands of the DNA double helix together.
Questions & Step-by-step Solutions
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Q
Q: In a double helix, the two strands of DNA are held together by which type of bond?
Solution:
Hydrogen bonds between complementary nitrogenous bases hold the two strands of the DNA double helix together.
Steps: 6
Show Steps
Step 1: Understand that DNA has two strands that twist together to form a shape called a double helix.
Step 2: Know that each strand of DNA is made up of smaller units called nucleotides.
Step 3: Each nucleotide contains a nitrogenous base, which can be one of four types: adenine (A), thymine (T), cytosine (C), or guanine (G).
Step 4: Realize that in the double helix, certain bases pair together: adenine pairs with thymine, and cytosine pairs with guanine.
Step 5: Learn that the connection between these paired bases is made by weak bonds called hydrogen bonds.
Step 6: Conclude that these hydrogen bonds between the complementary nitrogenous bases are what hold the two strands of the DNA double helix together.
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