plant cells, parts & functions
DESCRIPTION
Plant Cells, Parts & Functions. In order for cells to perform their functions, they must have energy. Plant cells are able to photosynthesize which is the ability to convert radiant energy into chemical energy. - PowerPoint PPT PresentationTRANSCRIPT
Plant Cells, Parts &
Functions
In order for cells to perform their functions, they must have energy.
Plant cells are able to
photosynthesize which is the
ability to convert radiant energy into chemical
energy.
Plant cells contain structures called chloroplasts that contain the green pigment chlorophyll which traps the energy from the sun & uses it to transform carbon dioxide gas & water into glucose.
Chloro- means green and plast - means small body. A Chloroplast is a small green body in a plant cell.
Glucose is a sugar that is then used as a food source for the plant as well as
otherorganisms.
Oxygen is also produced
during photosynthesi
s.
6CO2 + 12H2O -> C6H12O6 + 6H2O + 6O2
WaterGlucose OxygenCarbon Dioxide
Animal cells on the other hand must convert glucose & oxygen into the energy they need.
They are able to do this through a process called cellular respiration.
Chemical reactions take place within structures in the cells called mitochondria which allow the chemical energy stored in the bonds of glucose to be released when it reacts with oxygen.
Water & carbon dioxide are waste products for this reaction.
Other chemical activities are also happening within cells.
A cell is made up of small organ-like structures called organelles that make or break down different substances.
Each organelle has a specific function.
Plant & animal cells are similar, but have different structures specific to their needs & functions.
Common Plant Cell
Plant Cell
Organelles & Their
Basic Functions
…
Cell Membrane
- outer layer that controls what moves in & out of
the cell
Cell Wall(*Plant cells
only!) - outer layer of the plant cell that shapes, protects &
supports the cell
Chloroplasts (*Plant cells
only!)- contains a
green pigment, chlorophyll, that traps
sunlight for photosynthesis
Mitochondria
- site of cellular
respiration that releases
energy… “power
house” of the cell