Biology OCR Test 2 (A2)

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  • Created by: MJ
  • Created on: 29-05-13 18:43
What does haploid mean?
Half of original chromosomes
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Asexual reproduction in eurkaryotes is...
Mitosis
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Asexual in prokaryotes is
Binary Fission
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How can variation be caused in Mitosis?
Mutation
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Gametes fuse together to form a ________.
Zygote
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A bivalent is...
Chromosomes lined up in their homologous pairs
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Where do chiasmata form?
Prophase 1
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When does the nuclear envelope disintergrates and nucleous disappear?
Prophase 1 + 2
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What is spindle fibre made from?
Protein microtubules
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When do bivalents line up at the equator of the spindle?
Metaphase 1+2
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What aspect of DNA molecules makes them less likely to mutate?
Structure
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A mutation in mitosis can be described as
Somatic
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Why do some proteins have to be activated?
Their shape needs to be a better fit to their complementary molecules
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mRNA is a copy of a
Coding stand
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RNA polymerase catalyses
The hydrogen bonding between complementary nucleotide bases on the template strand and activated free nucleotides
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____________ catalyses the hydrolysis of lactose to glucose and galiactose
Beta galactosidase
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_________ genes are sequences of base pairs that can be transcribed onto a length of RNA
Structural
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RNA binds to the __________ region
Promotor
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Which is correct?
Discontinous variation describes qualitative differences between phenotypes
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Other cards in this set

Card 2

Front

Asexual reproduction in eurkaryotes is...

Back

Mitosis

Card 3

Front

Asexual in prokaryotes is

Back

Preview of the front of card 3

Card 4

Front

How can variation be caused in Mitosis?

Back

Preview of the front of card 4

Card 5

Front

Gametes fuse together to form a ________.

Back

Preview of the front of card 5
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