The process of life

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In the phrase 'MRS GREN', what does the 'M' stand for?
Movement.
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Which statement describes the job of an enzyme?
The job of an enzyme is to speed up chemical reactions.
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Which of the following needs to be constant for enzymes to work?
Temperature.
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Rates of reaction increase as the temperature increases. This is because molecules:
Move faster and have more collisions.
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What effect does a very high temperature have on an enzyme?
Very high temperature stops an enzyme from working.
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What is the name of the chemical that absorbs light energy?
Chlorophyll.
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What are the products of photosynthesis?
Glucose and oxygen.
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What is the job of cytoplasm in a plant cell?
Produces proteins.
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What is diffusion?
The movement of particles from a region of high concentration to a region of low concentration.
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Tomatoes in a greenhouse grow faster if the carbon dioxide concentration is increased. This shows that:
Carbon dioxide concentration must have been a limiting factor.
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Aerobic respiration requires:
Oxygen.
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What is the word equation for aerobic respiration?
Glucose + oxygen → carbon dioxide + water (+ energy)
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When is an animal likely to use anaerobic respiration?
When being chased by a predator.
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What is the function of a molecule of circular DNA in a bacteria cell?
DNA contains the genetic code for enzymes involved in respiration.
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What occurs during the process of 'fermentation'?
Fermentation involves sugars being converted into alcohols such as bioethanol.
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Card 2

Front

Which statement describes the job of an enzyme?

Back

The job of an enzyme is to speed up chemical reactions.

Card 3

Front

Which of the following needs to be constant for enzymes to work?

Back

Preview of the front of card 3

Card 4

Front

Rates of reaction increase as the temperature increases. This is because molecules:

Back

Preview of the front of card 4

Card 5

Front

What effect does a very high temperature have on an enzyme?

Back

Preview of the front of card 5
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