Chapter 2 “Cells” Section 1: “Cell Structure
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Transcript Chapter 2 “Cells” Section 1: “Cell Structure
Chapter 2 “Cells”
Section 1: “Cell Structure Pages
38 – 40
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)
cells without membranebound structures
EX: bacteria
pond scum
Eukaryotic Cells
(yew KAYR ee yah tihk)
cells with membranebound structures
EX: animals, plants,
fungi and protists
CELL WALL
protects the cell
gives shape
is made of cellulose
A cell wall is found in plants, algae, fungi, & most
bacteria.
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.
CYTOPLASM
gelatin-like inside cell membrane
constantly flows
aka protoplasm
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
NUCLEOLUS
Aka “little nucleus”
Found in the nucleus
CHROMATIN
contains genetic code that controls cell
made of DNA & proteins
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