Prokaryotic and Eukaryotic Cells What are the differences

Prokaryotic and Eukaryotic Cells � What are the differences between prokaryotic and eukaryotic cells? � Which kingdoms have prokaryotic cells?

Prokaryotic Cells Organisms in Kingdoms Eubacteria and Archaebacteria each consist of one prokaryotic cell.

What are the parts of a prokaryotic cell? ribosomes capsule DNA cell wall cytoplasm cell membrane flagella pili

What are the functions of all these parts? � Cell membrane › determines what goes in and out of cell membrane

Functions of cell parts � Cell Wall – › strong, rigid; keeps cell contents from bursting out Cell Wall

Functions of cell parts � Capsule › Slippery, mucuslike. Keeps cell from being eaten by other cells, and from being damaged by poisons (toxins) capsule

Functions of cell parts �Pili › hair-like projections which help cell grab onto surfaces pili

Functions of cell parts � Cytoplasm › many necessary chemical reactions take place › watery area with dissolved food and wastes cytoplasm

Functions of cell parts � Nucleoid – DNA › Region where DNA, the cell’s genetic information is found. DNA contains the instructions for making proteins nucleoid DNA

Functions of cell parts � Ribosomes › Place where instructions from DNA are used to make proteins. ribosomes

Functions of cell parts � Flagella › used for motility (movement) toward food or away from danger flagella