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who first developed the microscope? robert hook
cells smallest living unit of life
what is the cell theory? 1. all living things are composed of two or more cells
2. cells are the most basic unit of life
3. all cells come from pre-existing cells
prokaryotic NO membrane bound organelles, unicellular
eukaryotic contains membrane bound organelles, unicellular and multicellular
what do all cells have? cell membrane, cytoplasm, nucleic acid, and ribosomes
,nucleus "brain" of cell.. contains DNA/RNA and controls the cell
nuclear envelope membrane that surrounds the nucleus
cytoplasm semi-fluid material inside the cell that supports the organelles
cell/plasma membrane encloses the cell, regulates materials in/out, provides protection
and support
mitochondria "powerhouse" .. site of cellular respiration (ENERGY)
lysosome *animal cell only .. "trash can" .. contains enzymes that digest materials for the
cell
vacuole *animal cell only .. temporary storage of water, salt, proteins, and/or
carbohydrates
ribosomes site of protein synthesis
, endoplasmic reticulum (ER) network that transports materials around cell
rough endoplasmic reticulum contains ribosomes
smooth endoplasmic reticulum does not contain ribosomes
golgi apparatus body "UPS" of cell .. modify, collect, package, and send out protein
cilia short, hair-like projections for movement
flagella whip-like projection for movement
cell wall *plant cell only .. rigid outer membrane used for support
chloroplast site of photosynthesis (FOOD)