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Bioligy > Respiration and photosynthesis > Flashcards

Respiration and photosynthesis Flashcards

1
Q

What is the ultimate source of energy for green plants?

A

sun or sunlight energy

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2
Q

Plants’ leaves absorb energy from __________, which often comes from the Sun. What word completes the sentence?

A

light

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3
Q

What is the name of the process by which a plant transforms the energy from the Sun to stored energy in its leaves?

A

photosynthesis

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4
Q

What sugar is formed in photosynthesis?

A

glucose

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5
Q

What gas is needed by plants for photosynthesis?

A

carbon dioxide

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6
Q

What gas is produced by plants as a waste product of photosynthesis? Give the name, not the symbol or formula.

A

oxygen

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7
Q

Which essential substance for photosynthesis is absorbed from the soil?- glucose- carbon dioxide - water - oxygen

A

water

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8
Q

What substance is tested for to see if photosynthesis has occurred in a leaf?

A

Starch

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9
Q

The rate of photosynthesis is controlled by light intensity, availability of carbon dioxide and which other factor?

A

water

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10
Q

Plants store carbohydrates as starch. Name one other substance used for food storage in plants, especially in their seeds.

A

fats - lipids

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11
Q

ill in the missing word. In plants, __________ is used to strengthen the cell wall.

A

cellulose

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12
Q

In order to make proteins from glucose, what other substance do plant cells need?

A

nitrate

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13
Q

What substance produced in photosynthesis is used in plants to make fats and oils?

A

glucose

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14
Q

Fill in the missing word. In plant cells, food is stored in the form of starch, fat or __________.

A

oil

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15
Q

Plants use nitrate to make proteins. Where do they obtain this nitrate from?

A

soil

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16
Q

In order to make proteins, plant cells need nitrogen. They absorb nitrogen in the form of __________ ions from the soil. What one word completes the sentence?

A

nitrate

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17
Q

Look at the image below. The leaves of the unhealthy plant are yellow. What substance is missing from them but present in green leaves?

A

“chlorophyll”

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18
Q

Name the substance that is removed from the air by plants for photosynthesis. Give the full name, not the symbols.

A

carbon dioxide

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19
Q

Photosynthesis requires energy. What gives energy to a plant?

A

light

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20
Q

During the day in a greenhouse, it is warm and there is plenty of light, so the concentration of __________ __________ could be increased to boost the rate of photosynthesis. What two words complete the sentence?

A

carbon dioxide

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21
Q

On a sunny summer day, what factor is likely to limit the rate of photosynthesis in plants? Give the full name, not the symbols.

A

water or carbon dioxide

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22
Q

The rate of photosynthesis is controlled by temperature, availability of carbon dioxide and which other factor

A

light intensity

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23
Q

Some plant cells contain oil droplets which store __________. What word completes this sentence to describe the function of these droplets?

A

glucose

24
Q

What product of photosynthesis is used to make starch?

A

glucose

25
Q

The apparatus shown in the diagram can be used to measure the change in rate of photosynthesis in pondweed when the lamp is moved closer or further away from the pondweed. What would change to cause an increase or decrease in that rate?

A

light intensity

26
Q

In a greenhouse, you can control the temperature, light intensity, or carbon dioxide level in order to make it the __________ factor in photosynthesis. What one word completes the sentence?

A

limiting

27
Q

When plants respire, what gas is released into the atmosphere?

A

carbon dioxide

28
Q

True of false? plants only respire at night

A

false

29
Q

True or false? All living things respire all the time.

A

True

30
Q

In which part of a cell does most aerobic respiration take place?

A

mitochondria

31
Q

True or false? Respiration creates energy.

A

False

32
Q

In the experiment below, yeast cells are producing ethanol by anaerobic respiration. What is produced in animal cells?

A

lactic acid

33
Q

True or false? 60°C the time taken for the lime water to go cloudy is high because the enzymes in yeast have started to denature.

A

True

34
Q

Name the process by which the ethanol is produced from sugarcane.

A

Fermentation

35
Q

Name the micro-organism used to produce bread, beer and wine.

A

yeast

36
Q

Complete the chemical equation for anaerobic respiration in yeast:
glucose → __________ + ethanol

A

carbon dioxide

37
Q

What substance is removed from the air by living things for respiration?

A

oxygen

38
Q

What process occurs in plants which would cause water to form on the side of the glass?

A

respiration

39
Q

In aerobic respiration, glucose and oxygen are used up and carbon dioxide, water and __________ are released. What one word completes the sentence?

A

energy

40
Q

Which gas is produced as a waste product of aerobic respiration? Give the name, not the symbol.

A

carbon dioxide

41
Q

What are the missing two words? In aerobic respiration, glucose and oxygen are used up and __________ __________, water and energy are released.

A

carbon dioxide

42
Q

Name the organism that is usually used to produce ethanol from plant material.

A

yeast

43
Q

What is the name of respiration that occurs in the presence of oxygen?

A

aerobic

44
Q

Name a type of food (not a drink) produced using yeast.

A

bread

45
Q

Organisms need energy for chemical reactions to build larger molecules. They also need energy to move and to stay __________. What one word completes the sentence? (Hint: The answer is not “alive”)

A

warm

46
Q

Does anaerobic respiration release more, less or the same amount of energy as aerobic respiration?

A

less

47
Q

After anaerobic respiration, lactic acid is oxidised to form carbon dioxide and what other product?

A

water

48
Q

Which word equation shows anaerobic respiration in muscles?

A

glucose → lactic acid + energy

49
Q

The junction between two neurones is called a __________. What one word completes the sentence?

A

synaps

50
Q

What substances control all the chemical reactions in a cell?

A

enzymes

51
Q

What happens to the heart rate during exercise

A

increases

52
Q

During exercise, does the heart rate increase or decrease?

A

increase

53
Q

Name one of the substances that the blood supplies to the muscles during exercise

A

glucose or oxygen

54
Q

True or false? During exercise, an increase in breathing rate causes an increase in heart rate.

A

false

55
Q

During exercise, does the breathing rate increase or decrease?

A

increase

Bioligy (5 decks)

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