chapter 9 Flashcards

(28 cards)

1
Q

antiparallelism

A

the head-to-toe orientation of the two nucleotide chains of the DNA double helix

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2
Q

chromatin

A

DNA and its associated proteins

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3
Q

complementary base pairs

A

the pairs of DNA bases that form hydrogen bonds;adenine bonds to thymine and guanine bonds to cytosine

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4
Q

deoxyribose

A

a 5-carbon sugar that is part of a DNA nucleotide

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5
Q

DNA polymerase

A

an enzyme that adds new bases to replicating DNA and corrects mismatched base pairs

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6
Q

histone

A

A type of protein around which DNA coils in a regular pattern

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7
Q

ligase

A

an enzyme that catalyzes the formation of covalent bonds in the sugar phosphate backbone of a nucleic acid

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8
Q

next-generation sequencing

A

sequencing millions of small pieces of DNA simultaneously in order to reconstruct a genome sequence

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9
Q

nucleosome

A

A unit of chromatin structure, consisting of DNA coiled around an octet of histone proteins

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10
Q

nucleotide

A

The building block of a nucleic acid consisting of a phosphate group, a nitrogenous space and a five carbon sugar

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11
Q

polymerase chain reaction

A

A nucleic acid amplification technique in which a DNA sequence is replicated in a test tube. It is used to rapidly produce many copies of a specific DNA sequence.

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12
Q

purine

A

A nucleic acid base with a two ring structure, adenine and guanine

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13
Q

pyrimidine

A

A nucleic acid base with a single ring structure, cytosine, thymine, and uracil

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14
Q

replication fork

A

A locally opened portion of a replicating, DNA double helix

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15
Q

ribose

A

A five carbon sugar that is part of RNA

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16
Q

semiconservative replication

A

DNA synthesis along each separated, strand of the double helix

17
Q

sugar-phosphate backbone

A

The rails of a DNA double helix consisting of alternating deoxyribose and phosphate groups orientated opposite one another

18
Q

who discovered bacterial transformation (horizontal gene transfer)

A

frederick Griffith rough vs smooth vs heat killed smooth and rough

19
Q

what was the result of frederic griffiths experiment

A

DNA was what killed mice not its proteins

20
Q

what is the hershey chase experiment

A

radioactive sulfur and phosphorus
spun the tube

21
Q

what was the result of the hershey-chase experiment

A

the DNA is what made viruses viral
viral bacteria on bottom of tube

22
Q

what did friedrich miescher do

A

isolated nuclein in white blood cell nuclei

23
Q

Avery MacLeod and McCarty

A

dna trasnmits killing ability in bacteria

24
Q

hershey-chase

A

nucleic acie infects and replicates not protein

25
levine
5-carbon sugars and DNA vs RNA
26
Chargraff
base bonds
27
franklin
double helix
28
watson and crick
structure of DNA