List The Three Main Differences Between RNA And DNA

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1a. Review: Describe three main differences between RNA and DNA.
The three main differences between RNA and DNA are as follows: RNA has the sugar ribose instead of deoxyribose, which DNA has, RNA is single-stranded while DNA is double-stranded, and RNA uses uracil instead of thymine.
1b. Explain: List the three types of RNA, and explain what they do.
The three types of RNA are mRNA, tRNA, and rRNA. mRNA carries the instructions to create proteins from DNA in the nucleus to ribosomes. rRNA forms a part of both subunits on a ribosome, in which proteins are assembled. tRNA take amino acids to the ribosome and matches them to the coded mRNA message.
1c. Infer: Why is it important for a single gene to be able to produce hundreds or thousands of the same RNA molecules?
It’s important for a single gene to be able to produce hundreds/thousands of the same RNA molecules, because it provide instructions to be used over and over again in order for the proteins to become synthesized. If the genes do not produce the same RNA molecules, then humans would lack certain features that are made from proteins.
2a. Review: Describe what happens during transcription.
In transcription, the enzyme RNAP binds to DNA and “unzips” the DNA strands. Once “unzipped,” it uses one strand of DNA as a template to arrange nucleotides into a complementary strand of RNA. All the base pairings are the same, except for thymine, in which thymine is replaced with uracil during transcription.

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