Cell Function
Cell work together to perform basic life processes that keep organisms alive.
Getting rid of body wastes.
Making new cells for growth and repair.
Releasing energy from food.
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Cell
: a cell is a basic unit of structure and function of life. In other words, cells make up living things and carry out activities that keep a living thing alive.
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Your body is made up of specialized cells which carry out the processes needed for life.
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Genetic material
◦ Contains the material for life (DNA)
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Cytoplasm fills cell interior – Liquid
◦ Contains organelles sugars, amino acids
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Plasma membrane(aka. Cell Membrane)
Encloses the cell – it is like the cells’ skin
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Cytoplasm  Not an organelle, suspends the organelles
Cell Membrane
Nucleus
Mitochondria
Endoplasmic Reticulum (ER)
Golgi Bodies
Vacuoles
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Gel-like substance which holds all the cell components together
Made mostly of water
Place where many chemical reactions occur
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The flexible double-layered “ skin ” of the cell
Just like our skin holds us together, the cell membrane holds the cell and its components together
It also allows the movement of substances into and out of the cell.
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Controls the cell – akin t our brains controlling us
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Holds the genetic material (DNA) which is stored on Chromosomes
Directs activities of the cell
Usually one per cell, some cells have several
(muscle) while other have none (Red Blood Cell)
Spherical in shape
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DNA of eukaryotes is divided into linear chromosomes.
◦ Contains all the information needed for life (genes)
◦ We have 23 pairs = 46 totalTotal, half from mom and half from dad
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" Powerhouse of the cell " – Uses Glucose to provide cells with energy
(Cellular Respiration)
Glucose + Oxygen  Carbon Dioxide + Water + Energy
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Cells that use a lot of energy have more
Structure - outer and inner membranes
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◦ Network of transportation tubes which transport cellular substances around the cell (akin to a subway network transporting people from place to place)
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Contain unwanted substances for removal
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Maintaining internal pressures (Plant)
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•Chloroplasts are larger and more complex than mitochondria
•Contain chlorophyll which gives plants their green colour and also allows them to absorb light to be used to create sugar in the process of photosynthesis
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Carbon Dioxide + Water + Light Energy  Glucose (Sugar) + Oxygen
Photosynthesis Intro Video
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Within plant cells, photosynthesis takes place to produce glucose (sugar)
The sugar is then used within the mitochondria (cellular respiration) of both plants and animals
How do the animals obtain the glucose?
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Photosynthesis
Glucose + Oxygen  Carbon Dioxide + Water + Energy
Carbon Dioxide + Water + Light Energy
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Glucose (Sugar) + Oxygen
Cellular Respiration
It ’ s a Cycle!!
The products of photosynthesis are the reactants of cellular respiration
The products of cellular respiration are
Are the reactants of photosynthesis
YOU CAN ’ T HAVE ONE WITHOUT
THE OTHER!!
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Plant cells usually have one large vacuole
Maintains the cells pressure  keeps the plants stems and leaves firm
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Found just outside the cell membrane in plant cells
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 http://cellsalive.com/cells/cell_model.htm
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