In a DNA molecule, the type of sugar found is deoxyribose. The types of bonds present in a DNA molecule are covalent bonds and hydrogen bonds.
- Type of Sugar: Deoxyribose
- Types of Bonds: Covalent and Hydrogen
Explanation:
1. Deoxyribose is a type of sugar that forms the backbone of a DNA molecule. It is a pentose sugar that has one less oxygen atom compared to ribose sugar, which is found in RNA.
2. Covalent Bonds: Covalent bonds are strong chemical bonds that connect the individual nucleotides (building blocks of DNA) in a DNA strand. These bonds are formed between the sugar of one nucleotide and the phosphate group of another nucleotide, creating a sugar-phosphate backbone.
3. Hydrogen Bonds: Hydrogen bonds are relatively weak bonds that form between the nitrogenous bases of the nucleotides in a DNA molecule. These bonds occur between complementary base pairs (adenine with thymine and guanine with cytosine), helping to stabilize the double helix structure of DNA.
Therefore, in a DNA molecule, deoxyribose sugar is linked by covalent bonds to form the backbone of the molecule, while hydrogen bonds play a crucial role in holding the complementary base pairs together within the double helix structure of DNA.
