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Biology > S3 - Biology Test (2) > Flashcards

S3 - Biology Test (2) Flashcards

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1
Q

Plants make their own food through Photosynthesis.

What is one food they make and how is it stored?

A

They make Glucose and store it as starch

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2
Q

Give two examples of uses for plants

A

Food / fragrances / clothes / building material

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3
Q

What is the definition of photosynthesis?

A

A series of enzyme controlled reactions which allow green plants (those containing chlorophyll) to make carbohydrates using light energy

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4
Q

What is the photosynthesis word equation?

A

Sunlight
Carbon dioxide + Water ~> Oxygen + Glucose
Chlorophyll

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5
Q

What is the chemical equation for photosynthesis?

A

CO2 + H2O ~> O2 + C6H12O6

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6
Q

Name the three ways glucose can be used?

A
  • Respiration
  • To make cellulose
  • To make starch
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7
Q

What is cellulose?

A

A structural carbohydrate found in cell walls

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8
Q

What is starch?

A

A storage carbohydrate

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9
Q

How do we test for starch?

A
  • Boil leaf to remove waxy layer
  • Put the leaf in ethanol to remove
    chlorophyll
  • Wash the leaf
  • Test with iodine solution
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10
Q

Fill in the missing labels

A
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11
Q

Fill in the missing labels

A
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12
Q

Fill in the missing labels

A
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13
Q

What is glucose used for?

A

Releasing energy via respiration / To make cellulose / To make strach

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14
Q

The bubbles in a photosynthesising elodea can be counted to measure the rate of photosynthesis.

What gas does the elodea give off?

A

Oxygen

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15
Q

What factors affect the rate of photosynthesis?

A
  • Temperature
  • Light Intensity
  • Carbon dioxide concentration
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16
Q

What does Xylem transport and where from?

A
  • Water minerals
  • Up from roots
17
Q

What does Phloem transport and where from?

A
  • Carbohydrates / sugars
  • From leaves
18
Q

What’s the function of Xylem and Phloem?

A

Xylem - transport and structure

Phloem - Transport

19
Q

What is transpiration?

A

The movement of water in a plant

20
Q

What factors affect transpiration?

A
  • Temperature
  • Wind speed
  • Humidity
21
Q

Which is a living tissue and which isn’t:
- Xylem
- Phloem

A

Xylem - Dead

Phloem - Living

22
Q

Where does Photosynthesis take place?

A

Chloroplasts

23
Q

What experiment could you use to show chlorophyll is needed for photosynthesis?

A

Testing a Variegated Leaf

Biology (9 decks)

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