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Cards In This Set
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What are the monomers of nucleic acids?
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Nucleotides.
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What are nucleotides made up of?
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3 covenlently bonded subunits;
- one phosphate group - one sugar molecule - one organic nitrogenous base |
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What are nucleotides joined and split by?
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Joined by condensation and split by hydrolysis.
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What are the two types of Purine?
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Adenine and Guanine
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What are the three types of pyrimidine?
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Thymine, uracil and cytosine.
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Which are larger; purines or pyrimidines?
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Purines.
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What is the name of the sugar molecule in the nucleotides of DNA?
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Deoxyribose.
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How do the nucleic acid strands run in relation to each other in DNA?
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Antiparrallell.
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What are the complementary base pairs in DNA?
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Adenine and Thymine.
Guanine and Cytosine. |
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What are the main stages of DNA replication during interphase?
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- double helix is untwisted.
- hydrogen bonds between the bases are broken to expose the bases. - 'free' DNA nucleotides are hydrogen bonded onto the exposed bases according to the base pairing rules. - covelent bond are formed between the phosphate of one group and the sugar of the next to seal the backbone. - this continues all the way down the molecule until two new DNA molecules are formed. |
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What is the process of DNA replication also known as?
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Semi-conservative replication.
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What is the sugar molecule found in the nuceotides of RNA?
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Ribose.
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What nitrogenous bases are found in RNA and how do they pair?
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Adenine - Uracil
Cytosine - Guanine |
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What are the three forms of RNA?
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- Messenger
- Ribosomal - Transfer |
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What do the sequences of bases on DNA mean?
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They code for the sequence of amino acids in the assembally of a protein.
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