Photosynthesis And Respiration

Question 1

Photosynthesis equation

Answer 1

Carbon dioxide + water = glucose + oxygen

CO2 + h2o = C6H12O6 + o2

Question 2

Equation for respiration ( aerobic )

Answer 2

Oxygen+ glucose = CO2 + water

Question 3

How to test for glucose in respiration

Answer 3

Benedicts solution will turn from blue to orange

Question 4

Where does CO2 come from in photosynthesis

Answer 4

Through the stomata through diffusion

Question 5

Where does the water come from in photosynthesis

Answer 5

Root hair cells via osmosis

Question 6

What do plants use the glucose for( photosynthesis )and how to test for these things

Answer 6

Cellulose - found in cell wall
Proteins - biurets - goes from blue to purple
Oils and fats- ethanol+ water - shake- clear to white(cloudy)
Starch - iodine tests - orange to black
Respiration

Question 7

What is needed for photosynthesis to occur ( apart from CO2 and h20)

Answer 7

Light- chlorophyll

Question 8

How to find light intensity

Answer 8

Light intensity is directly proportional to 1/(distance)^2

Distance is light to the pond weed

Question 9

How would you do an experiment to measure rate of photosynthesis

Answer 9

Pond weed practical

Question 10

What is the pond weed practical

Answer 10

Pond weed is placed in warm water and then a lamp is moved from different distances form the pond weed, you then count the bubbles that are produced. The more bubbles the higher the rate of photosynthesis cause more oxygen is being produced

Question 11

Types of respiration

Answer 11

Aerobic- with oxygen

Anoerobic- without oxygen

Question 12

For respiration where do humans and plants get the oxygen from

Answer 12

• through lungs alveoli and diffuses into blood for humans

- photosynthesis during day ( stomata at night ) for plants

Question 13

Aerobic respiration produces more energy than anoerobic, what is this energy used for?

Answer 13

Warmth
Movement
Build up large molecules from small ones ( metabolism )

Question 14

What metabolism?

Answer 14

Building up big molecules from small ones

Question 15

Anoerobic respiration equation in mammals

Answer 15

Glucose = lactic acid + small amount of energy

Question 16

Equation for fermentation

Answer 16

Glucose = ethanol + CO2( small amount of energy)

Question 17

What happens to lactic acid in the liver

Answer 17

Converted back into glucose if there is oxygen

Question 18

Journey of air in the lungs

Answer 18

Trachea 
Bronchus
Bronchioles
Alveoli 
Capillaries

Question 19

Why do the alveoli have thins walls

Answer 19

Short diffusion pathways

Question 20

What’s on either side of a stomata and what do they do

Answer 20

Guard cells open and close the stomata

Question 21

Where does aerobic respiration take place

Answer 21

Mitochondria