Respiration and photosynthesis

Question 1

What is the ultimate source of energy for green plants?

Answer 1

sun or sunlight energy

Question 2

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

Answer 2

light

Question 3

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

Answer 3

photosynthesis

Question 4

What sugar is formed in photosynthesis?

Answer 4

glucose

Question 5

What gas is needed by plants for photosynthesis?

Answer 5

carbon dioxide

Question 6

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

Answer 6

oxygen

Question 7

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

Answer 7

water

Question 8

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

Answer 8

Starch

Question 9

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

Answer 9

water

Question 10

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

Answer 10

fats - lipids

Question 11

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

Answer 11

cellulose

Question 12

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

Answer 12

nitrate

Question 13

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

Answer 13

glucose

Question 14

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

Answer 14

oil

Question 15

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

Answer 15

soil

Question 16

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?

Answer 16

nitrate

Question 17

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

Answer 17

“chlorophyll”

Question 18

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

Answer 18

carbon dioxide

Question 19

Photosynthesis requires energy. What gives energy to a plant?

Answer 19

light

Question 20

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?

Answer 20

carbon dioxide

Question 21

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

Answer 21

water or carbon dioxide

Question 22

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

Answer 22

light intensity

Question 23

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

Answer 23

glucose

Question 24

What product of photosynthesis is used to make starch?

Answer 24

glucose

Question 25

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?

Answer 25

light intensity

Question 26

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?

Answer 26

limiting

Question 27

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

Answer 27

carbon dioxide

Question 28

True of false? plants only respire at night

Answer 28

false

Question 29

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

Answer 29

True

Question 30

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

Answer 30

mitochondria

Question 31

True or false? Respiration creates energy.

Answer 31

False

Question 32

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

Answer 32

lactic acid

Question 33

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.

Answer 33

True

Question 34

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

Answer 34

Fermentation

Question 35

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

Answer 35

yeast

Question 36

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

Answer 36

carbon dioxide

Question 37

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

Answer 37

oxygen

Question 38

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

Answer 38

respiration

Question 39

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

Answer 39

energy

Question 40

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

Answer 40

carbon dioxide

Question 41

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

Answer 41

carbon dioxide

Question 42

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

Answer 42

yeast

Question 43

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

Answer 43

aerobic

Question 44

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

Answer 44

bread

Question 45

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")

Answer 45

warm

Question 46

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

Answer 46

less

Question 47

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

Answer 47

water

Question 48

Which word equation shows anaerobic respiration in muscles?

Answer 48

glucose → lactic acid + energy

Question 49

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

Answer 49

synaps

Question 50

What substances control all the chemical reactions in a cell?

Answer 50

enzymes

Question 51

What happens to the heart rate during exercise

Answer 51

increases

Question 52

During exercise, does the heart rate increase or decrease?

Answer 52

increase

Question 53

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

Answer 53

glucose or oxygen

Question 54

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

Answer 54

false

Question 55

During exercise, does the breathing rate increase or decrease?

Answer 55

increase