Molecules and cells

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Why are biochemical reactions carried out in solution?
Since the water content in seeds and spores is as low as 10%, their biochemical activity is suspended until they become rehydrated
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What is water used for in biochemical reactions?
Transports nutrients and waste substances.
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What is cohesion?
The hydrogen bonding of water molecules.
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What important role does water have in temperature regulation?
The evaporation of water cools things down.
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What type of energy can break hydrogen bonds easily?
Heat/Latent heat of evaporation
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Why can living organisms absorb certain elements?
Ions are soluble in water.
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What is the role of potassium ions in absorption?
They maintain osmotic balance.
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What is the role of hydrogen carbonate ions in absorption?
Acts as a pH buffer.
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Is glucose polar or non-polar?
Polar
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Are amino acids polar or non-polar?
Polar
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What influences how ions and polar molecules pass through cell-surface membranes?
If the charged ions or polar molecules have shells or clusters of water
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Other cards in this set

Card 2

Front

What is water used for in biochemical reactions?

Back

Transports nutrients and waste substances.

Card 3

Front

What is cohesion?

Back

Preview of the front of card 3

Card 4

Front

What important role does water have in temperature regulation?

Back

Preview of the front of card 4

Card 5

Front

What type of energy can break hydrogen bonds easily?

Back

Preview of the front of card 5
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