bioenergetics Flashcards
(26 cards)
What does photosynthesis transfer?
Light energy into chemical energy inside plants
Is photosynthesis an endothermic or exothermic reaction?
Endothermic reaction
What are the reactants in photosynthesis?
Carbon dioxide and water
What are the products of photosynthesis?
Glucose and oxygen
What is the chemical symbol for carbon dioxide?
CO2
What is the chemical symbol for water?
H2O
What is the chemical symbol for oxygen?
O2
What is the chemical symbol for glucose?
C6H12O6
What is glucose used for in plants?
- Production of cellulose cell walls
- Producing amino acids
- Producing fats and oils
- Stored as insoluble starch
What factors can affect the rate of photosynthesis?
- Carbon dioxide concentration
- Light intensity
- Temperature
- Amount of chlorophyll
Why are limiting factors for photosynthesis important?
They are important to the economics of growing in greenhouses
How do limiting factors interact in photosynthesis?
To gain maximum growth rate and profit
What type of reaction is aerobic respiration?
Exothermic reaction
Where does aerobic respiration take place?
Inside mitochondria
What are the reactants in aerobic respiration?
Glucose and oxygen
What are the products of aerobic respiration?
Carbon dioxide, water and energy
What is the energy from aerobic respiration used for?
- Movement
- Keeping warm
- Chemical reactions to build large molecules
What happens to heart rate, breathing rate, and breath volume during exercise?
They increase
Does anaerobic respiration require oxygen?
No
Does anaerobic respiration produce more or less energy than aerobic respiration?
Less energy
What toxic substance is produced during anaerobic respiration?
Lactic acid
What is oxygen debt?
The amount of oxygen needed to break down the lactic acid produced in anaerobic respiration
What are the products of anaerobic respiration in plants and yeast cells?
Carbon dioxide and ethanol
How is anaerobic respiration in yeast used?
In the manufacture of bread and alcohol
