Upload
crystal-grant
View
221
Download
2
Embed Size (px)
Citation preview
Almost all living things get energy from light.
Directly: plants
Indirectly: animals
Photo synthesis
“to make with light”
CO2 + H2O C6H12O6 + O2
carbon dioxide + water glucose (sugar) + oxygen
chloroplast
capture energy fromsunlight
water entersthrough rootsand movesto leaf
carbon dioxideenters throughstomata
+ +6CO2 6H2O C6H12O6 6O2
as
as
as
sunlight
flour, sugar, eggs
glucose & oxygen cake
carbon dioxide & water
oven
asphotosynthesis baking a cake
raw materials
products
Photosynthesis
Capturing Sun’s Energy Using Energy to Make Food
chlorophyll (pigment)in chloroplast absorbslight
wateris absorbedby rootsand travelsto leaves
carbondioxide entersleaf throughstomata
chemicalreactionsoccur toproducesugar andoxygen
Cellular Respiration
Eat
Breakdownmolecules
Digest
Absorb molecules
Glucose Cell
Mitochondrion
C6H12O6 + O2 CO2 + H2O + energy
glucose + oxygen carbon dioxide + water + energy
Fermentation: energy is released without oxygen.
Cell Division
Interphase Mitosis
cell grows
cytoplasmdivides
organelles aredistributed
animalcells: cellmembrane squeezes togetherplant cell:cell plateforms in middle
Cytokinesis
DNA is copied
preparation for division
Prophase Metaphase TelophaseAnaphase
chromosomes form
centrioles move/spindlefibers form
nuclearenvelopebreaks down
chromosomes line up in middle
chromosomes attach tospindle fiber
chromosomes split intochromatids
chromatidsbecome new chromosome
chromosomesmove to opposite ends
chromosomesstretch out
nuclear envelope forms