DNA and RNA Pre-Lab Questions 1. Arrange the following molecules from least to m

Question

DNA and RNA Pre-Lab Questions 1. Arrange the following molecules from least to most specific with respect to the original nucleotide sequence: RNA, DNA, Amino Acid, Protein 2. Identify two structural differences between DNA and RNA. 3. Suppose you are performing an experiment in which you must use heat to denature a double helix and create two single stranded pieces. Based on what you know about nucleotide bonding, do you think the nucleotides will all denature at the same time? Use scientific reasoning to explain why.

Explanation / Answer

1. If we arrange the molecules from least to most specific with respect to the original nucleotide sequence we can get - protein < amino acid < RNA < DNA.

Proteins are produced by many amino acid. Same amino acid can be specified by different codons. So, proteins have the least resemblance with the DNA.

Same amino acids are specified by different codons. As, amino acid is a small subunit of a large protein so it has less difference in comparison to the protein.

RNA is a partial carrier of original nucleotide sequence because it contains U instead of T.

DNA carries the original nucleotide sequence.

2.

1. Double stranded structure

2. DNA carries deoxyribose as the pentose sugar.

1. Single stranded structure

2. RNA carries ribose as pentose sugar.

3. No, all the nucleotide don't denature at the same time because there are difference between the number of H - bonds between bases. A and T carries two hydrogen bonds between them. G and C carries three hydrogen bonds between them.

DNA RNA

1. Double stranded structure

2. DNA carries deoxyribose as the pentose sugar.

1. Single stranded structure

2. RNA carries ribose as pentose sugar.

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