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Yr 8 Science Revision > Ecosystems > Flashcards

Ecosystems Flashcards

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Biology 101 flashcards
1
Q

Write the word equations for Aerobic respiration, Anaerobic respiration and fermentation

A

1) Glucose+Oxygen-Carbon Dioxide+Water+Energy
2) Glucose-Latin Acids+Energy
3) Glucose-Ethanol+Carbon Dioxide+Energy

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2
Q

How does glucose and oxygen get to our cells

A

By aerobic respiration, they diffuse into our cells in exchange for Carbon Dioxide and Water

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3
Q

Does everything respire

A

No, plants photosynthesise

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4
Q

Aerobic means with/without oxygen

Anaerobic means with/without oxygen

A

Aerobic means with oxygen

Anaerobic means without oxygen

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5
Q

What do veins do in plants

A

Transfer Carbon Dioxide and Water throughout the leaf

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6
Q

Word equation for photosynthesis

A

Sunlight
Carbon Dioxide+Water-Oxygen+Glucose
Chlorophyll

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7
Q

What are Stomata for

A

Diffusing Carbon Dioxide and Water in and Oxygen and Glucose out

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8
Q

Where in the leaf does photosynthesis happen

A

Chloroplasts

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9
Q

Why are leaves broad and flat

A

Sunlight will hit it meaning the chlorophyll will diffuse more light.
Rain will stick to the leaves which give the plant nutrients

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10
Q

What is Glucose converted into a plant

A

Carbon Dioxide and Water

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11
Q

Is photosynthesis quicker on a sunny or cloudy day

A

Photosynthesis is quicker on a sunny day where more light will hit the leaf for chlorophyll to turn into energy

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12
Q

What is oxygen debt

A

When you have a shortage of oxygen, you have to respire anaerobically

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13
Q

How does Stomata open and close

A

By guard cells

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14
Q

What does Stomata let in and out

A

The let in Carbon Dioxide and Water, they let out Oxygen and Glucose

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15
Q

Why does the heart rate increase during excersie

A

So they blood can pump around the body to muscles and internal organs

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16
Q

What are some uses of the process of fermentation

A 
Beer
Wine
Bread
Cider
Cheese
17
Q

Describe an experiment to test what Glucose is stored as in a leaf

A
  • Boil the leaf in Washington er for 5 minutes
  • Remove leaf and place it in a boiling tube of ethanol
  • Heat ethanol in water bath
  • Rinse leaf in warm water
  • Place leaf on tile
  • Add iodine-starch test
18
Q

Name 4 minerals essential for healthy plants

A

1) Magnesium
2) Nitrogen
3) Phosphorus
4) Potassium

19
Q

What happens if a plant does not enough of these minerals

A

1) Leaves will turn yellow, not enough chlorophyll
2) Leaves will turn yellow and it will have weak stems, not enough protein
3) Leaves will turn purple, won’t grow roots
4) Leaves will be yellow with dead spots, won’t grow fruits

Yr 8 Science Revision (3 decks)

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