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