bioenergetics Flashcards
Describe photosynthesis
an endothermic reaction
transfers light energy into chemical energy inside plants
What is the photosynthesis word equation
sunlight
Carbon Dioxide + Water → Glucose + Oxygen
chlorophyll
What is the photosynthesis symbol equation
6CO2 + 6H2O → C6H12O6 + 6O2 + 6H2O
CO2 + H2O → C6H12O6 + O2 + H2O
Glucose made in photosynthesis is used for:
production of cellulose cell walls, producing amino acids, producing fats and oils, can be stored as insoluble starch
The rate of photosynthesis can be affected by:
carbon dioxide concentration, light intensity, temperature and the amount of chlorophyll
What are limiting factors for photosynthesis are important for
the economics of growing in greenhouses
Why do limiting factors interact
to gain maximum growth rate and profit
Describe aerobic respiration
an exothermic reaction which takes place inside mitochondria
What is the aerobic respiration word equation
Glucose + oxygen → carbon dioxide + water (+ energy)
What is the symbol for glucose
C6H12O6
The energy made in aerobic respiration is used for:
movement, keeping warm and chemical reactions to build large molecules
What increases during exercise
heart rate, breathing rate and breath volume
Describe anaerobic respiration
does not require oxygen, produces less energy
What is produced during anaerobic respiration
Lactic acid, it is toxic to the body
What is oxygen debt
The amount of oxygen needed to break down the lactic acid produced in anaerobic respiration
What does anaerobic respiration in plant and yeast cells produce
carbon dioxide and ethanol
What can anaerobic respiration in yeast cells used for
manufacturing bread and alcohol
What is metabolism
the sum of all reactions inside the cells of the body
Metabolism includes:
production of lipid molecules, production of amino acids,
respiration, breakdown of excess proteins and conversion of glucose to starch and glycogen
