structure of DNA 1.1 Flashcards

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1
Q

what information is in herited

A

genetic

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2
Q

what is dna

A

the substance that codes for all genetic information in a chemical language

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3
Q

whats the shape of dna

A

twisted double helix

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4
Q

what is each dna strand made up of

A

nucleotides

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5
Q

whats a nucleotide made up of

A

dna base
phosphate
deoxyribose sugar

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6
Q

how many carbon atoms do deoxyribose sugars have

A

5

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7
Q

what are the different bases called and what do they match with

A

adenosine with thyamine

guanine with cytosine

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8
Q

what hold the two bases together

A

weak hydrogen bond

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9
Q

the two strands of dna run in opposite directions what is this called

A

antiparralel

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10
Q

what does the base sequence of dna form

A

the genetic code

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11
Q

what are the two types of cells

A

eukaryotes

prokaryotes

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12
Q

how do prokaryotic cells carry dna

A

sincle circular chromosomes

smaller circular plasmids

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13
Q

how do eukaryotic cells carry their dna

A

in linear chromosomes in the nucleus packaged with associattd proteins

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14
Q

what do eukaryotic cells have that prokaryotic cells dont have

A

membrane bound organelles like chloroplasts or mitochondria

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15
Q

what are the associated proteins dna is wrapped around called

A

histones

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16
Q

di and if so whare do eukaryotic cells carry circular chromosomes

A

they do

in the mitochondria and chloroplasts

17
Q

why is yeast a special eukaryote

A

it also has plasmids