Topic 6 - Photosynthesis Flashcards
What is the primary process through which plants and algae produce food?
Photosynthesis
Photosynthesis is essential for the production of biomass in food webs and food chains.
In which organisms does photosynthesis occur?
Plants and algae
These organisms are known as primary producers.
Is photosynthesis an endothermic or exothermic reaction?
Endothermic
It takes in more energy than it releases.
What is transferred to chloroplasts in leaves during photosynthesis?
Light energy
This energy is crucial for the photosynthesis process.
Write the equation for photosynthesis.
Light + Carbon dioxide + Water → Glucose + Oxygen
Each compound has its own chemical symbol.
What is the chemical symbol for carbon dioxide?
CO₂
Carbon dioxide is a reactant in photosynthesis.
What is the chemical symbol for water?
H₂O
Water is a reactant in photosynthesis.
What is the chemical symbol for glucose?
C₆H₁₂O₆
Glucose is a product of photosynthesis.
What is the chemical symbol for oxygen?
O₂
Oxygen is a product of photosynthesis.
How does temperature affect the rate of photosynthesis?
Increases the rate until enzymes denature
The reaction is controlled by enzymes, which can be affected by temperature.
What is the effect of light intensity on photosynthesis?
Higher light intensity increases the rate of reaction
This is true for most plants.
How does carbon dioxide concentration affect the rate of photosynthesis?
Increases the rate of reaction
Carbon dioxide is needed to make glucose.
What is a limiting factor in the context of photosynthesis?
An environmental condition that restricts the rate of photosynthesis
Examples include low levels of light intensity.
True or False: An increase in one factor will always lead to an increase in the rate of photosynthesis.
False
Other factors may become limiting, preventing further increases.
What happens to the rate of photosynthesis when a limiting factor is present?
The rate levels off despite increases in other factors
This can be observed on a graph.
