A single DNA nucleotide is shown by sub-unit(s)
A - VCE - SSCE Biology - Question 3 - 2015 - Paper 1
Question 3
A single DNA nucleotide is shown by sub-unit(s)
A. X alone.
B. X and Y together.
C. Y and Z together.
D. X, Y and Z together.
Worked Solution & Example Answer:A single DNA nucleotide is shown by sub-unit(s)
A - VCE - SSCE Biology - Question 3 - 2015 - Paper 1
Step 1
X alone.
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Answer
In this part, we identify the structure of a single DNA nucleotide, which consists of a phosphate group, a sugar molecule (deoxyribose), and a nitrogenous base (such as adenine, thymine, cytosine, or guanine). Here, we observe only the segment labeled 'X' in isolation.
Step 2
X and Y together.
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Answer
This step involves analyzing the combination of sub-units 'X' and 'Y'. We examine the interaction between these two components, assessing how they function in tandem within the nucleotide structure. This might represent a phosphate-sugar connection or a base pairing, depending on context.
Step 3
Y and Z together.
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Answer
Next, we focus on the combination of 'Y' and 'Z'. This typically would relate to the sugar and base pairing, looking at how they contribute to the fundamental attributes of a nucleotide. Understanding their relationship is crucial for studying DNA structure.
Step 4
X, Y and Z together.
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Answer
Finally, we analyze the entire nucleotide with all three components: 'X', 'Y', and 'Z'. This comprehensive view illustrates how these elements work together to form the basic unit of DNA, emphasizing the importance of their interconnections in the overall structure and function of nucleic acids.
