Biology - DNA and Genome

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What is DNA
Chemical that genetic material in nucleus is made from
1 of 20
it's made from two stands that form a __ __ structure
double helix
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is DNA a polymer?
yes - it's a large molecule made up of smaller molecules
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DNA is contained in ch___
chromosomes
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where are chromosomes found?
nucleus of cell
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are chromosomes normally found in pairs or on their own?
in pairs if they're body chromosomes
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why are they in pairs?
get one from both parents
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humans have __ pairs. 46 in total
23
8 of 20
how many chromosomes are in gametes (sex cells)
23 in total
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each chromosome contains large number of ___
genes
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define gene
small section of DNA on chromosome
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each gene codes for a particular sequence of __ __, acting as instructions to make a specific protein
amino acid
12 of 20
what's a genome?
all genetic material in organism
13 of 20
why is understanding the genome important?
effect medicines in future (could search for genes linked to certain diseases - use to predict a persons's risks of disease), help understand inherited diseases (where there's a fault in a gene) - potentially develop cure
14 of 20
DNA is made from repeating n___ units
nucleotide
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each nucleotide contain...
a sugar, a phosphate and a base
16 of 20
the backbone of the DNA strand is made of...
sugar phosphate
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what are the four possible base pairs - letters - (hint; Apple Tree. Car Garage)
G , C and A ,T
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a sequence of _ (how many?) bases codes for a particular amino acid
3
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the order of bases controls the order of...
amino acids - how they're assembled
20 of 20

Other cards in this set

Card 2

Front

it's made from two stands that form a __ __ structure

Back

double helix

Card 3

Front

is DNA a polymer?

Back

Preview of the front of card 3

Card 4

Front

DNA is contained in ch___

Back

Preview of the front of card 4

Card 5

Front

where are chromosomes found?

Back

Preview of the front of card 5
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