cell structures
DESCRIPTION
Cell Structures. LESSON 1. COMMON CELL TRAITS. A cell is the smallest unit that is capable of performing life functions. COMPARING CELLS. The size & shape of a cell relates to its function . (job it does). Prokaryotic Cells (proh KAYR ee yah tihk). - PowerPoint PPT PresentationTRANSCRIPT
Prokaryotic Cells(proh KAYR ee yah tihk)
cells without membrane-bound structures
EX: bacteria
pond scum
Eukaryotic Cells(yew KAYR ee yah tihk)
cells with membrane-bound structures
EX: animals, plants, fungi and protists
protects the cell gives shape is made of cellulose A cell wall is found in plants, algae, fungi, & most
bacteria.
CELL WALL
CELL MEMBRANE
Outer covering, protective layer around ALL cells
For cells with cell walls,the cell membrane is inside the cell wall
Allows food, oxygen, & water into the cell & waste products out of the cell.
CYTOSKELETON
scaffolding-like structure in cytoplasm
helps the cell maintain or change its shape
made of protein
NUCLEUS
Directs all cell activities Contains instructions
for everything the cell does
These instructions are found on a hereditary material called DNA
Usually the largest organelle
NUCLEAR MEMBRANE
separates nucleus from cytoplasm
controls movement of materials in & out of nucleus