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Cell Structures
Review
Cell Wall / Cell Membrane
Cell Membrane
Cell Membrane
Cell Membrane
 Surrounds all cells
 Allows nutrients in and waste out
 Contains pores to allow the materials to
pass in/out = semipermeable
 Double-layered
Cytoplasm
Cytoplasm
Cell Membrane
Cytoplasm
Cytoplasm
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Clear (colorless)
Gel like
Continually in motion
Mostly made of water
Nucleus
Nucleus
Cell Membrane
Nucleus
Nuclear
membrane
Cytoplasm
Nucleus
 Largest and most visible organelle
 Covered by a membrane (nuclear
membrane) to separate it from the rest of
the cell
 Control center of a cell
Chromosomes
Cell Membrane
Nucleus
Nuclear
membrane
Cytoplasm
Chromosomes
Chromosomes
 Contains chromosomes – threadlike structures
made of DNA
 Deoxyribonucleic acid
 Genes – section of chromosome which gives
you your traits
 Two chromosomes with the same trait –
homologous pair
 One chromosome came from mom/one from dad
Genes
 Section of a chromosome
That determines your traits
Gene
Chromosomes
Homologous pair
Cell Membrane
Nucleus
Cytoplasm
Chromosomes
Mitochondria
Homologous pair
Cell Membrane
Nucleus
Cytoplasm
Mitochondria
Chromosomes
Mitochondria
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Hot dog-shaped organelle
Food changes into energy (ATP)
Surrounded by two membranes
Works only with oxygen present (comes
from breathing)
Diagram of an Animal Cell
Homologous pair
Golgi Body
Nucleus
Cell Membrane
Nuclear
membrane
Chromosome
Ribosomes
Mitochondria
Cytoplasm
Lysosome
Chloroplasts
Cell Wall
Cell
Membrane
Cell Wall
Cell Wall
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Located outside the cell membrane
Found in plants
Gives strength (rigid) so plant stands up
Made of fibers of cellulose
Also contains pores to allow materials to
pass in/out
Chloroplasts Video
Chloroplasts
Chloroplasts
Cell
Membrane
Cell Wall
Chloroplasts
 Converts energy from the sun
 Contains chlorophyll – a green
chemical used to trap sunlight
 Makes sugar by a process called
photosynthesis
Diagram of a Plant Cell
Chloroplasts
Cell Membrane
Homologous pair
Nucleus
Cell Wall
Nuclear
membrane
Cytoplasm
Chromosome
Mitochondria