Biology (B4)

Question 1

Name the two reactants of photosynthesis

Answer 1

Carbon dioxide and water

Question 2

Name the two products formed in photosynthesis

Answer 2

Oxygen and Glucose

Question 3

Write the word equation for photosynthesis

Answer 3

carbon dioxide + water → glucose + oxygen

Question 4

Write the symbol equation for photosynthesis

Answer 4

6CO2 + 6H2O → C6H12O6 + 6O2

Question 5

Describe what happens to the rate of photosynthesis s temperature increases

Answer 5

Rate increases and then decreases

Question 6

Describe what happens to the rate of photosynthesis as light intensity increases

Answer 6

Rate increases and then remains constant

Question 7

Describe what happens to the rate of photosynthesis as carbon dioxide increases

Answer 7

Rate increases and then remains constant

Question 8

State 3 limiting factors for photosynthesis

Answer 8

Light, Chlorophyll, carbon dioxide

Question 9

Name the plant used to investigate the effect of different factors on the rate of photosynthesis

Answer 9

Elodea (pondweed)

Question 10

How can you calculate the rate of photosynthesis of an aquatic plant?

Answer 10

Count the number of Oxygen bubbles produced in a minute

Question 11

How can you more accurately calculate the rate of photosynthesis of an aquatic plant?

Answer 11

Record volume of gas produced (using a gas syringe)

Question 12

Which cells are adapted for increased photosynthesis?

Answer 12

Palisade cells

Question 13

How are palisade cells adapted for increased rate of photosynthesis?

Answer 13

Contain lots of chloroplasts (and chlorophyll)

Question 14

State 3 limiting factors of photosynthesis

Answer 14

Carbon dioxide concentration
Temperature
Light intensity

Question 15

In a variegated leaf why do some parts appear white?

Answer 15

There is no chlorophyll

Question 16

State 5 uses of glucose produced during photosynthesis

Answer 16

Respiration
Stored as insoluble starch
Stored as fats/oils
Making cellulose
Making amino acids

Question 17

State 2 substances required for making proteins in plants

Answer 17

Nitrate ions and glucose

Question 18

Which substance is used to test for the presence of starch?

Answer 18

Iodine solution

Question 19

What colour will iodine solution turn in the presence of starch?

Answer 19

Blue/Black

Question 20

What colour will iodine solution turn if no starch is present?

Answer 20

Remains orange

Question 21

What colour will benedict solution turn in the presence of sugar?

Answer 21

Red - Lots of sugar
Orange - some sugar
Green - small amount of sugar

Question 22

What colour will Benedict solution tun if no glucose is present?

Answer 22

Remains blue

Question 23

Which substance is used to test for the presence of protein?

Answer 23

Biuret’s solution

Question 24

What colour will biuret solution turn in the presence of protein?

Answer 24

Purple

Question 25

What colour will biuret solution turn if no protein is present?

Answer 25

Remains blue

Question 26

Which substance is used to test for the presence of lipids (fats) ?

Answer 26

Ethanol

Question 27

What colour will ethanol solution turn in the presence of fats?

Answer 27

Creamy white

Question 28

What color will ethanol turn if no fat is present?

Answer 28

Remains colourless

Question 29

Describe the relationship between a light's distance from a plant and the rate of photosynthesis?

Answer 29

Power/Distance squared

Question 30

What substance is used to test for the presence of sugar?

Answer 30

Benedicts solution

Question 31

What is the name for respiration with oxygen?

Answer 31

Aerobic

Question 32

What is the name of respiration that occurs without oxygen?

Answer 32

Anaerobic

Question 33

What is the word equation for aerobic respiration?

Answer 33

glucose + oxygen → carbon dioxide + water + energy

Question 34

What is the balanced symbol equation for aerobic respiration?

Answer 34

C6H12O6 + 6O2 → 6CO2 + 6H2O

Question 35

What is the word equation for anaerobic respiration in animals?

Answer 35

Glucose -> Lactic acid

Question 36

What is the balanced symbol equation for anaerobic respiration in animals?

Answer 36

C6H12O6 -> 2C3H6O3

Question 37

What is the word equation for anaerobic respiration in yeast cells and plants cells

Answer 37

Glucose → ethanol + carbon dioxide

Question 38

What is anaerobic respiration in yeast cells called?

Answer 38

Fermentation

Question 39

What happens to your breathing and heart rate when you exercise?

Answer 39

Increases

Question 40

What is the name of the main organ in the respiratory system called?

Answer 40

Lungs

Question 41

What is the name of the sheet of muscle beneath the lungs?

Answer 41

Diaphragm

Question 42

What is the scientific name for the windpipe?

Answer 42

Trachea

Question 43

What is the scientific name for the air sac?

Answer 43

Alveoli

Question 44

The windpipe divides into two tubes when it reaches the lungs. What are these tubes called?

Answer 44

Bronchi/ Bronchus

Question 45

State 3 uses of energy in organisms

Answer 45

Chemical reactions to build larger molecules Movement Keeping warm

Question 46

What is the effect of exercise on heart rate during exercise?

Answer 46

Increases

Question 47

What is the effect of exercise on breathing rate and volume during exercise?

Answer 47

Increases

Question 48

Why does heart rate, breathing rate and breathing volume increases during exercise?

Answer 48

Supply muscles with more oxygenated blood

Question 49

Which type of respiration occurs if there is an insufficient oxygen available?

Answer 49

Anaerobic respiration

Question 50

State 2 effect of of long periods of anaerobic respiration

Answer 50

Build up of lactic acid Oxygen debt

Question 51

Where is lactic acid broken down?

Answer 51

The liver

Question 52

How is lactic acid broken down?

Answer 52

Reacts with oxygen to convert to glucose

Question 53

Define "oxygen debt"

Answer 53

Amount of oxygen require to break down lactic acid

Question 54

How would the lung capacity of an athlete compare to a non-athlete?

Answer 54

Larger

Question 55

How would the resting heart rate of an athlete compare to a non-athlete

Answer 55

Lower

Question 56

Define "Metabolism"

Answer 56

Sum of all reactions in a cell/body

Question 57

During metabolism, glucose is converted into which 3 substances?

Answer 57

Starch Glycogen Cellulose

Question 58

During metabolism lipids are formed from which molecules?

Answer 58

1 molecule glycerol 3 molecules fatty acids

Question 59

During metabolism, which substances are used to form amino acids?

Answer 59

Glucose and nitrate ions

Question 60

State 3 ongoing processes that are a part of metabolism

Answer 60

Respiration Digestion Protein synthesis

Question 61

Whats does CROPS stand for?

Answer 61

Cellulose Respiration Oils + Fats Protein synthesis Starch

Question 62

How does water enter a plant?

Answer 62

Roots, root hair cells by osmosis and up xylem transpiration stream

Question 63

How much energy is released in aerobic respiration?

Answer 63

A lot

Question 64

How much energy is released in anaerobic respiration?

Answer 64

A little

Question 65

How much energy is released in fermentation?

Answer 65

A little

Question 66

What is metabolism regulated by?

Answer 66

Thyroid gland