Eukaryotic Cell Structures & Functions

Ch7.3 (Ch7 Vocabulary Guide)

An Organelle Is:

A minute structure within

a plant or animal cell that has a particular job or function.

What are some functions that occur within a cell?

Digestion Excretion

Transportation of cell’s products

Storage Protection

Division Mobility

Respiration or Photosynthesis

Organelles found only in Plants:

Cell Walls

Cellulose

Chloroplasts

Plant Cell•Cellulose = carbohydrate found in cell walls

•Cell Wall= forms rigid outer structure, made of cellulose (fiber)

PLANT CELL

Cell wall

Large vacuole

Chloroplast

Found in both Plant and Animal Cells

Organelles that surround cells for support:

Cell Membrane= Semi-permeable,controls what enters and leaves the cell, outer containment envelope.

Cytoskeleton = gives structure to a cell (#14)

ANIMAL PLANT

Nucleus

CellMembrane

Control center for plant and animal cells:

This organelle controls cell activities and reproduction

Animal Cell

Nucleus

Nucleolus=“little nucleus”

Nucleus = control center for activities & reproduction, DNA & chromosomes housed here.

Nucleolus = contains and makes RNA

Control center for plant and animal cells:

Control center for plant and animal cells:

Chromosome = coiled DNA: contains instruc-tions for char-acteristics of an organism.

Chromatin = protein composing chromosomes

Red Blood Cells have no:

nucleus

Nuclear membrane = protects and controls what goes in and out of the nucleus (notice the nuclear pores in this picture of a nucleus)

Control center for plant and animal cells:

Ribosomes= Site of Protein Synthesis on the E.R.

Endoplasmic Reticulum

ROUND Ribosomes

Cytoplasm:or cytosol, = gel surrounds the organelles, contains enzymes

ER = Endoplasmic Reticulum:

specializes in the production & transport of lipids and membrane proteins

Rough ER has ribosomes Smooth ER lacks ribosomes

Ribosomes: Where

proteins are manufactured.

Endoplasmic Reticulum“Rough” with Ribosomes for protein synthesis

“Smooth” = Membrane “highway” For transport of materials

Golgi Bodies (aka Golgi

Apparatus):

where cell products are modified and packaged in

vesicles for export from the

cell.

“Sacks” for making & storing Secretions

Vacuole = storage for food and waterWhy are plant vacuoles larger than animal vacuoles?

Plant Vacuole

Do you see 2 Contractile vacuoles in this Paramecium?

Some Animal cell vacuoles pump water out by contracting:

Lysosome:

Contains digestive enzymes

Breaks down large molecules

Chloroplast= absorbs light, changes light energy into chemical energy for photosynthesis = GREEN Sacks

Mitochondria = site where energy is released from glucose in the form of:

The power house of the cell:

ATP