Biology B3

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What are mitochondria?
They are found in the cytoplasm of a cell and it is where respiration occurs.
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Why is a copy of the gene needed?
Because DNA can not leave the nucleus.
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How is the copied DNA taken to the ribosomes?
By Messenger RNA (mRNA)
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What are enzymes?
Biological catalysts that speed up a chemical reaction in the body.
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What is the Q10?
The coefficient to work out how temperature change alters the rate of reaction.
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Ho is Q10 calculated?
Rate at higher tempreature/rate at lower tempreature.
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What happens when there is a mutation?
Different protiens could be made because the order of the 4 bases changes.
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Why is respiration important?
Because it releases energy from food and provides energy for different processes in the body.
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What is ATP?
A molecule where energy is trapped and stored.
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What is the equation for aerobic respiration?
C + H + O 6CO + 6H O
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Which type of respiration involves oxygen?
Aerobic respiration.
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What is anaerobic respiration?
During hard exercise when the muscles don't receive enough oxygen where glucose is turned into lactose + energy.
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What are the disadvantages of anaerobic respiration?
Lactic acid builds up in the muscles and causes pain and it releases much less energy per glucose molecule so causes fatigue.
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What is oxygen debt?
The incomplete breakdown of glucose resulting in the build up of lactic acid.
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What are the advantages of being multicellular?
Allows organisms to grow larger and more complex.
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What is mitosis?
The process that produces new cells for growth.
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What is meiosis?
The type of cell division that produces gametes (sex cells).
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What is plasma?
A liquid part of the blood that carries substances such as glucose, carbon dioxide, antibodies and urea.
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How are red blood cells adapted to their function?
They are small so they can pass through small blood vessels. Their shape means they have a larger surface area to volume ratio so they can carry more hemoglobin.
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What is haemoglobin?
The substance responsible for transporting oxygen in the blood.
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What do arteries do?
Transport blood away from the heart to the tissues.
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What do veins do?
Transport blood back to the heart from the tissues.
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What do capillaries do?
Link arteries to veins and allow materials to pass between the blood and the tissues.
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What is the best measure of growth?
Using the dry mass.
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Why is using dry mass hard?
Because the organisms have to be killed.
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Other cards in this set

Card 2


Why is a copy of the gene needed?


Because DNA can not leave the nucleus.

Card 3


How is the copied DNA taken to the ribosomes?


Preview of the front of card 3

Card 4


What are enzymes?


Preview of the front of card 4

Card 5


What is the Q10?


Preview of the front of card 5
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