Microbiology
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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How did Griffith demonstrate a gene transfer? | capsular production could be restored to a capsular mutant from dead, wild-type bacteria
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How did Avery show that genes are made of DNA? | bacterial substance that caused transformation DNase sensitive--provided strong evidence that transferal of DNA rather than protein/RNA was necessary for capsule production
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What did Hershey and Chase's experiment confirm? | that DNA, rather than protein, is the genetic material
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Gene | DNA coding material for a single protein
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Chromosome | large circular molecule of several million base pairs of DNA that contains cellular genes
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Genome | collection of all the genes in a cell
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Complementary DNA | DNA that will base pair with another DNA molecule--A in place of T, C in place of G of the other molecule
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How many genes might there be in an average bacterium? In a human cell? | bacterium--5,000==human cell--50,000
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What cells have diploid or haploid genomes? | prokaryotic--haploid genomes--eukaryotic cells--diploid genomes
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What must happen to the genetic material when division of a cell occurs? | when division of a cell occurs, genome must be duplicated
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Where does DNA synthesis begin? | at the origin of replication
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What is produced by DNA replication? | 2 double-stranded DNA molecules identical to the starting DNA
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How does DNA proofread? | through DNA polymerase--checks to see if newly added nucleotides are complementary to template--if not--DNA polymerase removes and replaces them with new nucleotide
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Are human viruses harmful or beneficial? | can be bothe--whn virus causes damage to host it is harmful--when virus used by gene therapy to repair human genetic defect it is beneficial
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What is a viral vector? | virus used in gene therapy to deliver a gene with proper activity to host cells that need the gene
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Created by:
heatherlvn
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