DNA & Characteristics Flashcards

1
Q

what does DNA make in an organisms

A

it makes up genetic material

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2
Q

what is the structure of a DNA

A

It is a double helix

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3
Q

Why is DNA a polymer

A

Its made up of small repeating units= monomers

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4
Q

what is the name of the monomers that make up DNA

A

called nucleotides

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5
Q

wt does each DNA molecule contain

A

2 strands of nucleotides which call together to form a double helix

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6
Q

wt is DNA stored in

A

nucleus

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7
Q

wt is DNA stored as

A

chromosomes

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8
Q

what is a chromosome

A

Its one very long molecule of DNA and its coiled up

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9
Q

What do chromosomes come in

A

they come in pairs but humans have 23 pairs

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10
Q

Each chromosomes contain….

A

genes

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11
Q

what is a gene

A

a gene is a short section of DNA that codes for a specific protien

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12
Q

what are proteins

A

they’re polymers made from monomers called amino acids

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13
Q

what does a gene do

A

tells a cell to put together amino acids in a specific order to make a specific protein

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14
Q

what is the name of the reaction that join monomers together

A

its called polymerisation

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15
Q

what do proteins do

A

Protein controls different characteristics eg hair colour eye lash length

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16
Q

Genes an exist in….

A

different versions

17
Q

different versions of the same genes are called

A

Alleles

18
Q

what is the similarity in a pair of chromosomes

A

both carry the same genes

19
Q

the entire genetic material is an organism is its….

A

genome

20
Q

what is a name of the combination of alleles for each/ a gene for an organism

A

Geno type

21
Q

define the word phenotype

A

characteristics the organism displays

22
Q

what affects the organism phenotype

A
  1. your genotype 2. the environment