Objective: You will be able to give the functions of the cell organelles.

Do Now:• Look at the cell organelle sheet

• Give the function for as many of the cell organelles as you can remember

Figure 7.7 Overview of an animal cell

Figure 7.8 Overview of a plant cell

Write this statement down

The mitochondria is a site to see

It has lots of energy

Objective: You will be able to describe the structure and function of the endomembrane system.

Figure 7.10 Ribosomes

1. Found only in eukaryotic cells

2. A series of membrane bound organelles in close association

3. Makes and secretes proteins

4. Creates a larger cell membrane

5. Includes the nuclear envelope, E.R., Golgi, vesicles, lysosomes, vacuoles, and the plasma membrane

Figure 7.9 The nucleus and its envelope 

Figure 7.11 Endoplasmic reticulum (ER)

Figure 7.12 The Golgi apparatus

Figure 7.14 The formation and functions of lysosomes (Layer 1)

Figure 7.14 The formation and functions of lysosomes (Layer 2)

Figure 7.14 The formation and functions of lysosomes (Layer 3)

Figure 7.6 The plasma membrane

Figure 6.16 Review: relationships among organelles of the endomembrane system

Plasma membrane expandsby fusion of vesicles; proteinsare secreted from cell

Golgi pinches off transport vesicles and other vesicles that

give rise to lysosomes and vacuoles

Membranes and proteinsproduced by the ER flow in

the form of transport vesiclesto the Golgi

3

4 5 6

Nuclear envelope

Nuclear envelope isconnected to rough ER, which is also continuous

with smooth ER

2

3

Nucleus

Rough ER

Smooth ERcis Golgi

trans Golgi

Plasmamembrane

Lysosome availablefor fusion with anothervesicle for digestion

Transport vesicle carriesproteins to plasma membrane for secretion

Transport vesicle

1

Group Activity• Think back to the activity in which you created

the cell park• How can you modify your park to include the

structures and functions of the endomembrane system?

• Write a small paragraph describing the endomembrane system

• Include a drawing of just the endomembrane system

Objective: You will be able to identify the parts of he mitochondria and the chloroplasts.

Do Now:• Read the section “mitochondria and

chloroplasts” on p. 179-180

• Give one similarity between these two organelles

• Mitochondria are enclosed by two membranes– A smooth outer membrane– An inner membrane folded into cristae

Mitochondrion

Intermembrane space

Outermembrane

Freeribosomesin the mitochondrialmatrix

MitochondrialDNA

Innermembrane

Cristae

Matrix

100 µm

Figure 6.17

• Chloroplasts– Are found in leaves and other green organs of

plants and in algae

Chloroplast

ChloroplastDNA

RibosomesStroma

Inner and outermembranes

Thylakoid

1 µm

Granum

Figure 6.18

• Chloroplast structure includes– Thylakoids, membranous sacs– Stroma, the internal fluid

Figure 7.4 A prokaryotic cell

Figure 7.7 Overview of an animal cell

Figure 7.8 Overview of a plant cell