SB6a: Photosynthesis Keywords Flashcards
Biomass
The total mass in living organisms, usually shown as the mass after drying.
Cellulose
Plant cell walls are made of tough cellulose, which support the cell and allow it to keep its shape.
Chloroplast
A green disc containing chlorophyll, found in plant cells. This is where the plant makes glucose through photosynthesis.
Endothermic reaction
A type of reaction in which energy from the surroundings is transferred to the products, e.g. photosynthesis.
Food chain
A diagram that uses arrows to show the flow of energy through organisms that depend on each other for food.
Gas exchange
A process in which one gas diffuses across a membrane and another gas diffuses in the opposite direction.
Glucose
The sugar produced by photosynthesis and needed for respiration.
Guard cell
A pair of guard cells open and close plant stomata.
Lipid
A substance in a large group of compounds that includes fats and oils.
Palisade cell
Tall, column-shaped cell near the upper surface of a plant leaf.
Photosynthesis
A series of enzyme-catalysed reactions carried out in the green parts of plants. Carbon dioxide and water combine to form glucose. This process requires energy transferred by light.
Polymer
A long-chain molecule made by joining many smaller molecules (monomers) together.
Producer
An organism such as a plant that makes its own food using photosynthesis.
Protein
A polymer made up of amino acids.
Protist
An organism that belongs to a kingdom of eukaryotic and mainly single-celled organisms (also called a protoctist).
