anatomy 2404 Cell_Structure_LAB

anatomy 2404 Cell_Structure_LAB - Cell Structure The Cell...

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Unformatted text preview: Cell Structure The Cell The The Cell is the smallest structural The and functional unit of a living organism. The cell has many parts. Each part has a specific job and plays an important part in the life of a cell. cell. Cell Organelles Cell Organelle= “little organ” “little structures within the cell that perform different cell functions different All the stuff in between All the organelles is cytosol cytosol Everything in a cell Everything except the nucleus is cytoplasm cytoplasm Cell Membrane Cell Boundary of the cell Made of a phospholipid biilayer b Nucleus Nucleus Control center of the Control cell cell Contains DNA Contains DNA Surrounded by a Surrounded double membrane double Usually the easiest Usually organelle to see under a microscope microscope Usually one per cell Cytoskeleton Cytoskeleton Acts as skeleton and Acts skeleton muscle muscle Provides shape and Provides structure structure Helps move Helps organelles around the cell cell Made of three types of Made filaments filaments Endoplasmic Reticulum Endoplasmic A.k.a. “ER” Connected to nuclear Connected membrane membrane Highway of the cell Rough ER: studded studded with ribosomes; it makes proteins makes Smooth ER: no no ribosomes; it makes lipids lipids Ribosome Ribosome Site of protein Site synthesis synthesis Found attached to Found rough ER or floating free in cytosol free Produced in a part of Produced the nucleus called the nucleolus nucleolus That looks familiar…what is a That polypeptide? polypeptide Golgi Apparatus Golgi Looks like a stack of Looks plates plates Stores, modifies and Stores, packages proteins packages Molecules transported Molecules to and from the Golgi by means of vesicles vesicles Lysosomes Lysosomes Garbage disposal Garbage of the cell of Contain digestive Contain enzymes that break down wastes wastes Which organelles do lysosomes work with? Peroxisome Peroxisome Breaks down toxic substances in liver In breakdown process, oxygen and In hydrogen combine to create H2O2 Peroxide = metabolic waste Mitochondria Mitochondria “Powerhouse of the Powerhouse cell” cell” Cellular respiration occurs here to release energy for the cell to use use Bound by a double Bound membrane with cristae inlaid within cristae Vacuoles Vacuoles Large central vacuole Large central usually in plant cells plant Many smaller Many vacuoles in animal animal cells cells Storage container for Storage water, food, enzymes, enzymes wastes, pigments, etc. wastes, What type of microscope may have been used to take this picture? Centriole Centriole Aids in cell division Usually found only in Usually animal cells animal Made of microtubules Where else have we talked about microtubules? Nucleus- I’m the boss NucleusMitochondrion- power packed Cytoplasm- oooey, gooey Membrane- coming or going Vacuole- hold on layaway Golgi Bodies- packed –n- ready Lysosomes- clean up the junk Ribosomes- one order o’ proteins ER- on the road again Cytoskeleton- keep’n the shape Different Types of Cells Different ...
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