Additional Biology First Test AQA

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What does the nucleus do?
Controls the chemical reactions in the cell
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What is the cytoplasm?
A liquid gel where chemical reactions take place
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What uses oxygen to produce energy?
Mitochondria
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What organisms have similar features to plant cells?
Algae
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What is the subsatnce that makes chloroplasts green and what does it do?
Chlorophyll. It absorbs the sunlight
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Why don't root cells have chloroplasts?
As they are underground and so receive no light
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Where is the DNA found in a bacterial cell?
In the plasmids and circular chromosomes based in the cytoplasm
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What is a flagellum?
A long protein strand which allows bacteria to move
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What is the equation for aerobic respiration?
Glucose + Oxygen ==> Carbon Dioxide + Water + (Energy)
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What is the equation for anaerobic respiration?
Glucose ==> Lactic acid + (Energy)
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What does specialised mean in terms of cells?
They can become any type of cell
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What are the two main adaptations of root hair cells?
1. Large surface area 2. Long and narrow
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What is diffusion?
Movement of particles along a concentration gradient from an area of high concentration to an area of low concentration
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What is a common cell adaptation to increase the rate of diffusion?
Large surface area
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Why do plants and algae need a constant supply of glucose?
They are respiring all of the time
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What is most likely to be the limiting factor on a hot, sunny day?
Carbon dioxide
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Other cards in this set

Card 2

Front

What is the cytoplasm?

Back

A liquid gel where chemical reactions take place

Card 3

Front

What uses oxygen to produce energy?

Back

Preview of the front of card 3

Card 4

Front

What organisms have similar features to plant cells?

Back

Preview of the front of card 4

Card 5

Front

What is the subsatnce that makes chloroplasts green and what does it do?

Back

Preview of the front of card 5
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