Outline DNA nucleotide structure in terms of sugar (deoxyribose), base and phosphate.
A DNA nucleotide is composed of deoxyribose, a phosphate group and a nitrogenous base (adenine, guanine, thymine, or cytosine). The phosphate group is covalently bonded to the carbon of the deoxyribose, and the nitrogenous base is attached to the deoxyribose on the opposite side.
A DNA nucleotide is composed of deoxyribose, a phosphate group and a nitrogenous base (adenine, guanine, thymine, or cytosine). The phosphate group is covalently bonded to the carbon of the deoxyribose, and the nitrogenous base is attached to the deoxyribose on the opposite side.
2.4.2. State the names of the four bases of DNA.
Adenine, Guanine, Thymine, and Cytosine.
Adenine, Guanine, Thymine, and Cytosine.
2.4.3. Outline how the DNA nucleotides are linked together by covalent bonds into a single strand.
given
given
2.4.4. Explain how a DNA double helix is formed using complimentary base pairing and hydrogen bonds.
Each sugar of the backbone (sides of the "ladder") is covalently bonded to a nitrogenous base. Each of these bases forms hydrogen bonds with its complimentary nitrogenous base, forming the '"rungs" of the "ladder". The sides of the ladder are composed of alternating sugar and phosphate groups. The rungs are each composed of two nucleotides which are attached to the sugars of opposite sides of the DNA ladder and are attatched to eachother by hydrogen bonds.
Each sugar of the backbone (sides of the "ladder") is covalently bonded to a nitrogenous base. Each of these bases forms hydrogen bonds with its complimentary nitrogenous base, forming the '"rungs" of the "ladder". The sides of the ladder are composed of alternating sugar and phosphate groups. The rungs are each composed of two nucleotides which are attached to the sugars of opposite sides of the DNA ladder and are attatched to eachother by hydrogen bonds.
2.4.5. Draw a simple diagram of the molecular structure of D
No comments:
Post a Comment