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Published byChristal Malone Modified over 9 years ago
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5.2 Cells: a Look Inside
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Why is a cell like a cookie factory?
A cookie factory has many parts that work together to make it function. A cell also has many parts that work together. Every cell part has a job or function.
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Comparing cells to a factory
This chart shows how a cell is like a cookie factory
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What is the cell membrane?
a thin layer that separates the inside of the cell from its outside environment. keeps the cytoplasm inside lets waste products out lets nutrients in is made out of lipids & proteins
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What is the nucleus? most visible organelle
is covered with a membrane that allows materials to pass in and out often called the “control center” of the cell because it contains DNA The nucleolus acts as a storage area for materials.
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What are mitochondria? the “powerhouses” of cells
produce much of the energy a cell needs to function rod shaped surrounded by 2 membranes inner membrane has many folds only work if it has oxygen We breath air to get oxygen for our mitochondria
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What is a vacuole? the storage area of the cell
A small, fluid-filled sac Vacuoles store water, food, and waste. Plant cells usually have one large vacuole to store water
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What is endoplasmic reticulum (ER)?
a series of tunnels throughout the cytoplasm. transport proteins from one part of the cell to another Series of folded & connected tubes
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What are Ribosomes? the protein factories of the cell.
When ribosomes make proteins, they release them into the ER Some ribosomes float in the cytoplasm
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What are Golgi bodies? receive proteins and other compounds from the ER. package these materials & distribute them to other parts of the cell release materials outside the cell
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What are Lysosomes? contain enzymes that can break things down
pick up bacteria, food, and old organelles and break them into small pieces that can be reused
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What is cytoskeleton? a series of fibers made from proteins
provides structure to the cell and gives it its shape
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How are plant cells different?
Plant cells have chloroplasts, but animal cells do not. A chloroplast is an organelle that contains a green pigment called chlorophyll. Photosynthesis occurs in the chloroplast
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How are plant cells different?
Plant cells have a large central vacuole that stores cell sap. Cell sap is mostly water Cell sap gives cell structure
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How are plant cells different?
Plant cells have a cell wall, but animal cells do not. Made of cellulose Cell walls provide structure and support for the plant.
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