Lesson 7: Photosynthesis Flashcards
Organisms can be classfied based on how they produce energy, such as:
autotrophs and heterotrophs.
Autotrophs:
Can make their own food, photosynthesise, and are plants and cyanobacteria.
Heterotrophs:
Must consume other plants and animals for energy, and are animals, fungi, most bacteria, and single-celled eukaryotes (amoeba, protozoa).
Photosynthesis is an _______________ reaction.
endothermic
During photosynthesis, plants produce:
glucose from simple inorganic molecules (CO2 and H2O) using light energy.
The light energy required is absorbed by a green pigment called:
chlorophyll in the leaves.
Chlorophyll is in the __________ of plant cells, particularly in the ____________ and __________________.
chloroplasts, palisade, spongy mesophyll cells.
Photosynthesis is a process with…
2 main stages.
- Light energy is used to…
split water, releasing oxygen gas and hydrogen ions.
- Carbon dioxide gas combines with the…
hydrogen to make glucose.
Photosynthesis occurs in the leaves, where…
chloroplasts are found. The chlorophyll absorbs light energy, enabling photosynthesis.
Chloroplasts…
Contain photosynthentic pigments (absorb energy), and are found in the thylakoid membrane.
In the chloroplasts of plant cells, there are a series of enzymes and other proteins called…
Photosystems I and II.
Light Dependent Reactions occur in…
the thylakoid membrane.
Light Dependent Reactions require…
sunlight and water.
