Download 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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