B3

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  • Created by: daisyerin
  • Created on: 05-05-14 15:32
where does protein synthesis occur?
protein synthesis occurs on th ribosomes in the cytoplasm
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the code needed to produce a protein is carried from the DNA to the ribosomes by a .....?
the code needed to produce a protein is carried from the DNA to the ribsomes by a molecule called mRNA.
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proteins are made of...?
proteins are made of long chains of amino acids
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proteins can be...?(4)
proteins can be structual, hormones, carrier molecules or enzymes
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mutations may lead to the....?
mutations may lead to the production of different proteins
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mutations may lead to the production of different proteins BECAUSE...?
mutations may lead to the production of different proteins because a change in the bases in DNA can change the amino acid sequence
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chromosomes are long, coiled molecules of DNA divided up into...
chromosomes are long coiled molecules of DNA divided up into regions called genes.
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enzymes are specific and work by a...?
enzymes are specific and work by a "lock and key mechanism"
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enzyme activity is affected by...?
enzyme activity is affected by pH and temperature
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enzyme activity is affected by pH and temperature due to...?(2)
lower collision rates at lower temperatures, denaturing at extremes of pH and high temperatures
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in meiosis the chromosome number is.... and each cell is...?
in meiosis the chromosome number is halved and each cell is genetically different
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gametes are produced by...?
gametes are produced by meiosis
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new cells for growth are produced by....?
new cells for growth are produced by mitosis
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the new cells made by mitosis are...
the new cells made by mitosis are genetically identical
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being multicellular allows organisms to:
being multicellular allows organisms to be larger, use cell differentation, be more complex
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undifferentiated cells called STEM CELLS can develop into different...(3)?
undifferentiated cells called STEM CELLS can develop into different cells, tissues and organs
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growth can be measured by change in...(3)
growth can be measured by change in wet mass, dry mass, or length
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the symbol equation for AEROBIC RESPIRATION is...
C H O + 6O 6CO 6H O
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red blood cells carry....
red blood cells carry oxygen around the body and are specially adapted for this
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the heart has.... and is part of a .....?
the heart has four chambers and is part of a doubke circulatory system
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anaerobic respiration takes place........ when there is.....?
anaerobic respiration takes place during hard excersize when there is insufficient oxygen available
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arteries have..... and carry blood.....
arteries have thick elastic walls and carry blood Away from the heart
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veins have........ and carry blood....
veins have large lumens and valves and carry blood back tot he heart
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capillaries are..... and....
capillaries are permeable and link arteries to veins
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anaerobic respiration produces....
anaerobic respiration produces lactic acid
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lactic acid produced in anaerobic respiration ....(2)
builds up in muscles causing plague and fatigue, and acts as an oxygen debt and has to be broken down in the liver after excersize
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gene therapy involves....
changing a persons genes to try and cure disorders
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genetic engineering can be used to...BUT...
genetic engineering can be used to produce useful products BUT raises some ethical issues
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a selective breeding programme can ..... but may reduce... leading to problems of...
a selective breeding programme can produce organisms with desired characteristics but may reduce the gene pool leading to problems of inbreeding
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cloning plants is easier than cloning animals because...
cloning plants is easier than cloning animals because many plant cells retain the ability to differentiate
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what is nucleur transfusion?
the process of placing the nucleus of a body cell into an egg cell
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new cloning technology will...(3)
new cloning technology will -produce a number of benefits -involve certain risks -raise ethical issues
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plants can be cloned by...?
plants can be cloned by tissue culture
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Other cards in this set

Card 2

Front

the code needed to produce a protein is carried from the DNA to the ribosomes by a .....?

Back

the code needed to produce a protein is carried from the DNA to the ribsomes by a molecule called mRNA.

Card 3

Front

proteins are made of...?

Back

Preview of the front of card 3

Card 4

Front

proteins can be...?(4)

Back

Preview of the front of card 4

Card 5

Front

mutations may lead to the....?

Back

Preview of the front of card 5
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