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20 Cards in this Set
- Front
- Back
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The sizing and packaging of genomes vary greatly in ?
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size
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the smallest viruses can contain only ?# or ?# genes in their genome
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4 or 5
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E. coli contain ?# of genes in their genome
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4,288
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The human cell contains between ?# and ?# genes in its genome
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20,000
40,000 |
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The stretched out DNA can be ?# times or more longer than the cell.
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1,000
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If the sum of all DNA contained in the 46 human chromosomes were unraveled it would measure about ? in length
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6 feet
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In 1953 ? and ? discovered structure of DNA is a gigantic molecule with the help of x-ray crystallography experiments performed by ?
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james watson and francis crick
Rosalind Franklin |
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The basic unit of DNA is a ?
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neucleotide
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A ? in a typical bacterium consists of several million nucleotides linked end to en
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chromosome
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The basic unit of DNA consists of 3 sub-components and they are ?
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a nitrogen base
a sugar a phosphate |
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The backbone of DNA and RNA is made of a combination of a ? and ? backbone
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sugar and phosphate
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What sugar does RNA contain?
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Ribose
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What sugar does DNA contain?
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Deoxyribose
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The nitrogenous bases, ? and ?, attach by ? bonds at the 1' position of the sugar.
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purines- A&G
pyrimidines-T,C, and U covalent |
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The paired bases of DNA are joined by ? bonds
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hydrogen
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A= ?
T= ? G= ? C= ? U= ? |
adenine
thymine guanine cytosine uracil |
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each sugar attaches to ?# phosphates in the DNA backbone. One phosphate attaches at the ? carbon end and the other is at the ? carbon end
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2
5' 3' |
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PUGA-2
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Purines are guanine and adenine and they both have a 2 ring structure
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The leading strand is synthesized ? and the lagging strand is synthesized ?
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continuously
discontinuously |
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Purines and Pyrimidines attach by covalent bonds at the ? carbon position of the sugar
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1'
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