第 1 题
1 分A specific segment of DNA in a eukaryotic cell contains several introns and exons. Which of the following statements correctly describes the arrangement and function of these regions?
AQA A Level · Biology 7402
DNA, genes and chromosomes：练习题
5 道选择题即时批改，另有 3 道文字题附完整解题步骤，全部围绕「DNA, genes and chromosomes」。
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第 2 题
1 分The structure of DNA differs significantly between different locations within a eukaryotic cell. Which of the following correctly describes the DNA found in the mitochondria of a human cell?
第 3 题
1 分Compare the DNA found in prokaryotic cells with the nuclear DNA of eukaryotic cells. Which of the following is a correct distinction?
第 4 题
1 分Which of the following statements correctly distinguishes between the DNA found in the nucleus of a eukaryotic cell and the DNA found in a prokaryotic cell?
第 5 题
1 分Which of the following best describes the difference between DNA in a prokaryotic cell and the nuclear DNA in a eukaryotic cell?
第 6 题
5 分In eukaryotes, much of the nuclear DNA consists of non-coding sequences. Distinguish between introns and non-coding multiple repeats found between genes.
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第 7 题
6 分In eukaryotic DNA, distinguish between the structural arrangement of exons and introns within a gene and explain why only one of these is represented in the mature proteome.
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第 8 题
6 分DNA molecules vary in structure depending on the type of cell in which they are found.
a) Contrast the structure of DNA in a prokaryotic cell with the DNA in the nucleus of a eukaryotic cell. (3 points)
b) Mitochondria also contain DNA. Describe how the DNA in a mitochondrion is similar to the DNA found in prokaryotic cells. (2 points)
c) Define the term locus in the context of a chromosome. (1 point)
先自己写一遍答案，再对照解题步骤。
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