Cell respiration (CR) and photosynthesis

Question 1

How does ATP release energy?

Answer 1

It releases energy when one phosphate group is broken up

Question 2

Hydrolisis

Answer 2

water is used to break down the chemical bonds

Question 3

Chemical equation of cellular respiration

Answer 3

C(6)H(12)O(6)+6O(2)=6CO(2)+6H(2)O+energy

Question 4

what molecules are needed for cellular respiration

Answer 4

Glucose and oxygen

Question 5

what molecules are produced after cellular respiration

Answer 5

Carbon dioxide, water, energy (ATP)

Question 6

Cell respiration

Answer 6

the release of ATP energy by hydrolisis

Question 7

difference between aerobic and anaerobic respiration

Answer 7

Aerobic - occurs with oxygen and release energy but more slowly
Anaerobic - occurs without oxygen and releases less energy but more quickly

Question 8

Products of Aerobic respiration

Answer 8

Glucose+oxygen=carbon dioxide+water+ATP (38)

Question 9

Products of Anaerobic respiration

Answer 9

gluctose=lactate (+ATP (2))

Question 10

Stages of aerobic respiration

Answer 10

1. Glycolisis
2. The link reaction
3. The Krebs cycle
4. Electron transport chain

Question 11

Application of yeast and anaerobic respiration in industries

Answer 11

Ethanol production by yeast
Lactic acid preservation of food

Question 12

What is respirometer and how is it used?

Answer 12

Respirometer - a device that determines an organisms respiration rate by measuring the exchange rate of carbon dioxide and oxygen

Question 13

Chemical equation of photosynthesis

Answer 13

6CO(2)+6H(2)O=(sunlight) C(6)H(12)O(6)+6O(2)

Question 14

what is needed and what is produced (by photosynthesis)

Answer 14

Carbon dioxide+water=glucose+oxygen

Question 15

stages of photosynthesis

Answer 15

1. The light-dependent reactions - convert light energy from sun into chemical energy (ATP)
2. The light-independent reactions - use chemical energy to synthesize organic compounds

Question 16

Role of light in photosynthesis

Answer 16

light energy is converted to chemical energy in the form of sugars

Question 17

Role of light in photolysis

Answer 17

breaks down H2O into oxygen and hydrogen

Question 18

light absorbtion of chlorophyll

Answer 18

absorbs mostly blue (430nm) and red (662nm) wavelength light and reflects green

Question 19

light spectrum

Answer 19

term used to describe the distribution of electromagnetic waves

Question 20

What kind of light do plants absorb?

Answer 20

only 700nm to 400nm (visible light)

Question 21

limiting factors

Answer 21

Temperature - as temperature increases, the number of collisions increases. Therefore, the rate of photosynthesis increases.

Light intensity - increasing the light intensity increases the rate of photosynthesis (until some other limiting factor becomes short in supply)

Carbon dioxide concentration - as concentration increases, the rate of photosynthesis increases

Question 22

Calculation of RF

Answer 22

Distance traveles by the compound : distance traveled by the solvent front