Question

list the number of the following components found within the dna diagram above.

• number of nucleotides: ______
• number of phosphate groups: ______
• number of deoxyribose molecules: ______
• number of adenine: ______
• number of thymine: ______
• number of cytosine: ______
• number of guanine: ______

Explanation:

Step1: Count nucleotides

Each nucleotide consists of a phosphate group, deoxyribose sugar, and a nitrogen - containing base. By counting the units in the diagram, there are 6 nucleotides.

Step2: Count phosphate groups

Each nucleotide has one phosphate group. Since there are 6 nucleotides, there are 6 phosphate groups.

Step3: Count deoxyribose molecules

Each nucleotide has one deoxyribose molecule. So, there are 6 deoxyribose molecules.

Step4: Count adenine (A)

By looking at the labeled bases, there is 1 adenine.

Step5: Count thymine (T)

Adenine pairs with thymine. Since there is 1 adenine, there is 1 thymine.

Step6: Count cytosine (C)

By looking at the labeled bases, there is 1 cytosine.

Step7: Count guanine (G)

Cytosine pairs with guanine. Since there is 1 cytosine, there is 1 guanine.

Answer:

• Number of nucleotides: 6
• Number of phosphate groups: 6
• Number of deoxyribose molecules: 6
• Number of adenine: 1
• Number of thymine: 1
• Number of cytosine: 1
• Number of guanine: 1