Multiple Choice
What is the twisted ladder shape of DNA called?
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7. DNA and Chromosome Structure
DNA Structure
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following is a characteristic of DNA?
A
It is composed of a double helix with antiparallel strands
B
It is typically single-stranded in eukaryotic cells
C
It contains the sugar ribose
D
Its bases include adenine, uracil, cytosine, and guanine
Verified step by step guidance1
Recall the basic structure of DNA and its key characteristics in molecular biology.
Understand that DNA is composed of two strands forming a double helix, where the strands run in opposite directions, known as antiparallel orientation.
Recognize that DNA contains the sugar deoxyribose, not ribose (which is found in RNA).
Identify the nitrogenous bases in DNA: adenine (A), thymine (T), cytosine (C), and guanine (G). Note that uracil (U) is found in RNA, not DNA.
Conclude that the correct characteristic of DNA from the options is that it is composed of a double helix with antiparallel strands.
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