AQA-AS-Biology-Paper-1-June-2021-Question-Paper_2

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Answer questions in the spaces provide box 0 1 Figure 1 shows part of a DNA molecule. Figure 1 0 1 . 1 Name the type of bond between: complementary base pairs adjacent nucleotides i... n a DNA strand [2 marks] 0 1 . 2 The length of a gene is described as the number of nucleotide base pairs it contains. information in ×10 base pairs. [2 marks] Describe molecule and the structure of an mRNA molecule. [2 marks] . 4 In a eukaryotic cell, the structure of the mRNA used in translation is different from the structure of the pre-mRNA produced by transcription. Describe and explain a difference in the structure of these mRNA molecules. [2 marks] [Show More]

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