does anyone know how small a cell is?
TRANSCRIPT
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CELLS!
Does anyone know how small a cell is? http://www.cellsalive.com/howbig.htm
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Cells are made of many parts Organelles – literally means “little
organs” Each of these carries out a specific
function.
Pick a partner and work together to list and describe the functions of each organelle in your diagrams.
Write this in your notebooks! It will be checked for completion!
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Plant Cell
Vacuole Chloroplast Cell membrane Cell wall Golgi apparatus Mitochondrion Smooth endoplasmic reticulum Ribosome Nuclear Envelope Nucleolus Nucleus Rough endoplasmic reticulum
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Animal Cell
Nucleolus Nucleus Nuclear envelope Rough Endoplasmic Reticulum Golgi apparatus Ribosome Cell membrane Mitochondrion Smooth Endoplasmic Reticulum Centrioles
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Bacterial Cell
Peptidoglycan- mesh-like layer outside plasma membrane of bacteria.
Cell wall Cell membrane Ribosome Pili – connect bacterium to another DNA- Deoxyribonucleic Acid, contains
genetic code. Flagellum – used for locomotion
(movement)
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What makes something living?
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Characteristics of LIFE
1. Made up of cell/s Multicellular – many cells Unicellular – one cell
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2. Able to reproduce Sexual reproduction- two cells from
different parents unite to produce a new organism.
Asexual reproduction- the new organism has one parent
Characteristics of LIFE
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3. Have genetic code from parent/s Offspring resembles their parent/s DNA carries the genetic code
Characteristics of LIFE
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4. Can grow and develop Grow in size Develop specialized cells Mature
Characteristics of LIFE
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5. Need material (food) for energy Metabolism- chemical reactions in which
an organism breaks down and builds up materials to carry out life processes.
Characteristics of LIFE
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6. Respond to the environment Stimulus- a signal to which an organism
responds. Light Temperature Low glucose levels
Characteristics of LIFE
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7. Maintain Internal balance Homeostasis- maintaining internal
conditions Temperature Water content
Characteristics of LIFE
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8. Evolution Occurs over time ( a LONG time) Over several generations Adaptations to better suit their
environment.
Characteristics of LIFE
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Discussion groups!
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Observations!
Class discussions
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READ textbook pages 16-20 WRITE an argument explaining why a
plant is a living thing and a rock is not.
Use ALL 8 Characteristics of living things in the argument.
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