Multiple Choice
Each chromosome in a cell contains ______.
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7. DNA and Chromosome Structure
DNA Structure
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Along the length of the DNA strand, information is stored in the sequence of __________.
A
phosphate groups
B
deoxyribose sugars
C
hydrogen bonds
D
nitrogenous bases
Verified step by step guidance1
Understand that DNA is composed of a backbone and attached components. The backbone consists of alternating phosphate groups and deoxyribose sugars.
Recognize that the phosphate groups and deoxyribose sugars form the structural framework of the DNA strand, but they do not store genetic information.
Identify that the nitrogenous bases (adenine, thymine, cytosine, and guanine) are attached to the deoxyribose sugars and extend inward from the backbone.
Know that the sequence of these nitrogenous bases along the DNA strand encodes genetic information, as the order of bases determines the instructions for building proteins.
Conclude that the correct answer is 'nitrogenous bases' because they are the components that store the genetic information in the DNA sequence.
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