Cell respiration (CR) and photosynthesis Flashcards
How does ATP release energy?
It releases energy when one phosphate group is broken up
Hydrolisis
water is used to break down the chemical bonds
Chemical equation of cellular respiration
C(6)H(12)O(6)+6O(2)=6CO(2)+6H(2)O+energy
what molecules are needed for cellular respiration
Glucose and oxygen
what molecules are produced after cellular respiration
Carbon dioxide, water, energy (ATP)
Cell respiration
the release of ATP energy by hydrolisis
difference between aerobic and anaerobic respiration
Aerobic - occurs with oxygen and release energy but more slowly
Anaerobic - occurs without oxygen and releases less energy but more quickly
Products of Aerobic respiration
Glucose+oxygen=carbon dioxide+water+ATP (38)
Products of Anaerobic respiration
gluctose=lactate (+ATP (2))
Stages of aerobic respiration
- Glycolisis
- The link reaction
- The Krebs cycle
- Electron transport chain
Application of yeast and anaerobic respiration in industries
Ethanol production by yeast
Lactic acid preservation of food
What is respirometer and how is it used?
Respirometer - a device that determines an organisms respiration rate by measuring the exchange rate of carbon dioxide and oxygen
Chemical equation of photosynthesis
6CO(2)+6H(2)O=(sunlight) C(6)H(12)O(6)+6O(2)
what is needed and what is produced (by photosynthesis)
Carbon dioxide+water=glucose+oxygen
stages of photosynthesis
- The light-dependent reactions - convert light energy from sun into chemical energy (ATP)
- The light-independent reactions - use chemical energy to synthesize organic compounds
Role of light in photosynthesis
light energy is converted to chemical energy in the form of sugars
Role of light in photolysis
breaks down H2O into oxygen and hydrogen
light absorbtion of chlorophyll
absorbs mostly blue (430nm) and red (662nm) wavelength light and reflects green
light spectrum
term used to describe the distribution of electromagnetic waves
What kind of light do plants absorb?
only 700nm to 400nm (visible light)
limiting factors
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
Calculation of RF
Distance traveles by the compound : distance traveled by the solvent front
