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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.
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Cell Structures Review
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 Cell Membrane Cytoplasm
Cytoplasm • Clear (colorless) • Gel like • Continually in motion • Mostly made of water
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 Chromosomes Cytoplasm
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
Gene Genes • Section of a chromosome That determines your traits
Chromosomes Homologous pair Cell Membrane Nucleus Chromosomes Cytoplasm
Mitochondria Homologous pair Cell Membrane Nucleus Chromosomes Cytoplasm Mitochondria
Mitochondria • Hot dog-shaped organelle • Food changes into energy (ATP) • Surrounded by two membranes • Works only with oxygen present (comes from breathing)
Cell Membrane Homologous pair Golgi Body Nucleus Chromosome Lysosome Cytoplasm Diagram of an Animal Cell Nuclear membrane Ribosomes Mitochondria
Cell Wall Cell Membrane Cell Wall
Cell Wall • 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 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
Cell Membrane Homologous pair Nucleus Nuclear membrane Chromosome Cytoplasm Mitochondria Diagram of a Plant Cell Chloroplasts Cell Wall