BIOLOGY Nucleic Acids and Protein Synthesis 2

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  1. What are the parts of an RNA nucleotide?
    • 1. A 5-carbon ribose sugar
    • 2. A phosphate group
    • 3. Nitrogenous bases

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  2. What are the differences between DNA and RNA?
    • 1. DNA has deoxyribose sugar, RNA has ribose sugar
    • 2. DNA has Thymine to pair with Adenine, RNA has Uracil to pair with Adenine
    • 3. DNA is double stranded, RNA is single stranded
    • 4. DNA is only found in the nucleus, RNA is found in the nucleus and cytoplasm
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  3. What is the job of tRNA?
    • Transfer RNA reads the sequence of amino acids from mRNA and brings over the appropriate amino acid to the ribosome to link them together to form a protein. (Translation)
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  4. What is the job of mRNA?
    Messenger RNA carries the directions from DNA out to the ribosomes so proteins can be made. (Transcription)

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  5. What is the job of rRNA?
    • Ribosomal RNA is a part of the ribosome where translation occurs.
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  6. How do the bases in RNA relate to those in DNA?
    • When RNA is paring with DNA:
    • 1. Adenine pairs with Thymine
    • 2. Uracil pairs with Adenine
    • 3. Cytosine pairs with Guanine
    • 4. Guanine pairs with Cytosine
  7. What are the roles of DNA and RNA in transcription?
    • A DNA molecule is copied onto a strand of mRNA, and then it carries the directions from DNA out to the ribosomes so proteins can be made.
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  8. What are the roles of DNA and RNA in translation?
    • The tRNA starts reading mRNA at the AUG codon, and continues reading mRNA, bringing over the appropriate amino acids and linking them together to form a protein until a stop codon is reached. The protein is then shipped to where it needs to be utilized.
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Natalie
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BIOLOGY Nucleic Acids and Protein Synthesis 2
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2010-01-24 02:24:54
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nucleic acids and protein synthesis
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