Cell intro

CELLSSlides 2-6 are by Stephen Taylor10-14 by Karyn Ferguson

FIVE

Most Cells contain hereditary information that is passed on from cell to cell during reproduction

All cells are basically the same in chemical structure and activities

Cell Diversity: Not all cells are alike

• Size and shape differ…this is related to the function of cells

• Internal Organization…cells can be specialized to perform different jobs• Organelles – internal components that

perform different functions

Ex: Pancreas cells (pictured above) make insulin, while white blood cells (below) digest unwanted microbes.

Cell TypesAll living things are classified into groups based on their cell type

Prokaryotic Cells

• Bacteria– LACK a NUCLEUS

and membrane bound organelles

– Reproduce asexually

– Contain genetic material

Eukaryotic Cells• “Eu” – True cells• CONTAIN a

NUCLEUS and membrane bound organelles

• Reproduces asexually or sexually

• Contains genetic material

• Ex. plant, animal, fungi, algae

PLANT CELL

ANIMAL CELL

Virus

• Viruses lack cellular structures and are non-living– Contain:

a. CAPSID – protein coat

b. Can only contain DNA or RNA

– Reproduce in a host cell

– Ex. HPV, HIV, H1N1, bacteriophage

Types of cells

View of Different Cells