C1.3 - Photosynthesis Flashcards
(14 cards)
Photolysis
Splitting of water molecules using light energy during the light dependent reactions of photosynthesis releasing oxygen electrons, and protons
Producers
Organism capable of producing its own organic compounds by using energy from sunlight
light dependent reaction
Initial stages of photosynthesis which occur in the thylakoid
Utilise light energy to convert ATP to ADP
Generate oxygen through photolysis
light independent reaction reactions
Second stage of photosynthesis
Occur in the stroma of chloroplasts
Involve fixation of carbon dioxide and production of carbs using ATP
Thylakoids
flattened membrane bound sacs in chloroplast
Contain photosynthetic pigments and proteins needed for light dependent reactions
Chloroplasts
organelles found in plant cells
Contain chlorophyll
Carry out photosynthesis
carbon fixation
Conversion of inorganic carbon into organic carbon by a living organism
Stroma
Space between inner membrane and thykaloid membranes in chloroplasts containing enzyme
Chlorophyll
Green pigment found in the chloroplast which absorbs light energy
paper chromatography
Technique used to separate mixtures based on movement of different substances on a piece of paper by capillary action
different pigments
Chlorophyll a and B
Beta carotene is orange
xanthophyll is yellow
Retention factor
ratio of distance moved by a pigment to distance moved by the solvent
RF value is the distance travelled by sample divided by the distance travelled by solvent
Absorption spectrum
Wavelengths of light absorbed by particular substance or pigment
Action spectrum
Graphical representation showing effectiveness of different wavelength of light in driving photosynthesis
