Question

complete each statement. reread the problem as needed.

• in a dna molecule, the location of the sugar group is choose... in each nucleotide.
• the number of different nitrogenous bases is choose... in different dna molecules.
• the only molecule attached directly to the phosphate group in dna is a choose...

Explanation:

1. For the first statement: In a DNA nucleotide, the sugar (deoxyribose) is part of the structure, and its location is consistent (same) in each nucleotide. So the first "Choose..." should be "the same".
2. For the second statement: DNA has four types of nitrogenous bases (adenine, thymine, cytosine, guanine), and this number is the same across different DNA molecules. So the second "Choose..." should be "the same".
3. For the third statement: In DNA, the phosphate group is attached directly to the sugar (deoxyribose) molecule. So the third "Choose..." should be "sugar (deoxyribose)".

Answer:

• In a DNA molecule, the location of the sugar group is the same in each nucleotide.
• The number of different nitrogenous bases is the same in different DNA molecules.
• The only molecule attached directly to the phosphate group in DNA is a sugar (deoxyribose).