Bioenergetics - Flashcards Photosynthesis

B8 Photosynthesis

What is the word equation for Photosynthesis?

carbon dioxide + water —> glucose + oxygen

Where does the energy of photosynthesis come from?

From the sun, in the form of sunlight

In which organ does most photosynthesis take place?

Leaf

In which organelle does photosynthesis take place in?

Chloroplast

Which substance is responsible for absorbing light energy in photosynthesis?

Chlorophyll

How do plants get the carbon dioxide required for photosynthesis?

It diffuses from the air into the leaves, via stomata

How do plants get the water required for photosynthesis?

It is absorbed by root hair cells, via osmosis and transported by xylem vessels

Give 3 features of starch that make it a useful long-term storage molecule

1. It is insoluble in water

2. It is compact

3. It can be easily broken down when needed

Is photosynthesis endothermic or exothermic?

Endothermic

What is the symbol equation for photosynthesis?

6CO2+6H2O+Light Energy→C6H12O6+6O2

Give 5 ways plants can use the glucose they produce

1. Cellular respiration - break down glucose to release energy

2. Make Cellulose - needed for strong cell walls

3. Make Starch - which is used to store glucose for a long time

4. Make amino acids - which are used to make proteins

5. Make Lipids - these store energy as fats or oils, for later use

What are the 3 environmental factors that affect photosynthesis?

1. T