CELLS and how they relate to Life Functions Membrane •Excretion all waste products exit through...
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CELLS and how they relate to Life Functions
Transcript of CELLS and how they relate to Life Functions Membrane •Excretion all waste products exit through...
CELLSand how they relate to
Life Functions
The Cell Theory
• All living things are made up of one or more cells.
The cell is the basic unit of structure.
The Cell Theory
• A cell is the smallest unit that is capable of performing all the life functions.
The cell is the basic unit of function.
The Cell Theory
Through mitosis one cell makes 2 cells, etc.
All cells come from pre-existing cells.
Exceptions to the Theory
• Virusescan only reproduce
• Mitochondria & Chloroplastshave their own DNA and can replicate
Cell Membrane
• Regulationallows good stuffand small moleculesin“bad” stuff &LARGE moleculesare “blocked”
http://www.bcscience.com/bc9/images/0_quiz_animal_cell.jpg
Cell Membrane
• Excretionall waste productsexit throughthe membrane
• Carbon dioxidehttp://www.bcscience.com/bc9/images/0_quiz_animal_cell.jpg
Cell Membrane
• Transportmaterials are ABSORBED
• NutritionThe ingestion of food
http://www.bcscience.com/bc9/images/0_quiz_animal_cell.jpg
Cell Membrane
• GROWTHthe membrane must increase in size
http://www.bcscience.com/bc9/images/0_quiz_animal_cell.jpg
Chloroplasts• Synthesis site of
PHOTOSYNTHESIS
• Reproduction they have their own DNA and can make copies of themselves
• Synthesis make proteins at their own ribosomes
http://www.rocklin.k12.ca.us/staff/dfix/zenith/handouts/organelles/chloroplast_diagram.jpg
Cytoplasm
• Synthesis – lots of molecules are made here
• Growth – an increase in the number of molecules = growth
• Transportdiffusioncyclosis
Mitochondria• Respiration site of
aerobic respiration
• Reproduction they have their own DNA and can make copies of themselves
• Synthesis make proteins at their own ribosomes
http://www.imtech.res.in/raghava/rslpred/mitochondria.jpg
Nucleus• Reproduction Mitosis
starts here
• Synthesis - makes new DNA – chromosomes
• Regulation the DNA controls all cell activities
http://www.familytreedna.com/img/understanding-dna/cell_diagram.gif
Ribosome• Synthesis makes
proteins
• Growth an increase in the number of molecules leads to growth
Ribosome
Protein
http://www.chem.wisc.edu/~cavagnero/images/ribosome-bound-polypeptide.jpg
Vacuole• Excretion – stores
wastes
• Nutrition – stores food
http://www.plantbiology.ucr.edu/faculty/rai%201.png
