Chapter 1 Lesson 2Looking Inside Cells

Cells and Heredity

7th Grade Life Science

Ms. Schreurs

My Planet Diary

Glowing GlobsPage 12

Parts of a Cell 1. ________= a rigid layer that surrounds the

cells of plants and some other organisms ** animal cells do not have cell walls**

2. _______________= Controls which substances pass into and out of a cell

** all cells have a cell membrane**

**Figure 1 Page 13**

Cell Organelles

• __________= tiny cell structures that carry out specific functions within a cell

1. Nucleus2. Nucleolus (Ribosomes)

3. Cytoplasm4. Mitochondria

5. Endoplasmic Reticulum 6. Golgi Apparatus

7. Vacuole8. Chloroplasts 9. Lysosomes

Nucleus• _________= Acts as the cell’s control

center, directs all of the cell’s activities– Surrounded my nuclear envelope

Nucleolus• ____________= small

structure in the nucleus where ribosomes are made o ______________= small

grain shaped organelles that produce proteins

Nucleolus

Nucleus

Organelles in the Cytoplasm • ___________= fills the region between

the cell membrane and the nucleus

• ____________= Rod shaped structures, converts energy stored in food to energy the cell can use to live and function

Organelles in the Cytoplasm

• __________________= an organelle with a network of membranes that produces many substances – Helps ribosomes attached to it produce

proteins Ribosomes

Bottom of Page 15-Complete in Textbook

Organelles in the Cytoplasm

• _______________= an organelle that packages and distributes materials made in the ER – Receives proteins and other

materials and distributes them

How do the parts of a cell function in ways that are similar to the parts of a building? (page 18 Apply it!)

Organelles in the Cytoplasm

• _________= Stores water, food, or other materials needed by the cell– Found in all plant cells

and some animal cells

Organelles in the Cytoplasm

• ____________= Capture energy from sunlight and change it to a form of energy cells can use in making food

– NOT found in animal cells

– Make leaves green because leaf cells contain chloroplasts

Organelles in the Cytoplasm

• ____________saclike organelles which contain substances that break down large food particles into smaller ones – Found in animal cells

How Do Cells Work together in an Organism?

• Plant and animal cells are _____________ – “ made of many cells”

• Single- Celled organisms are called Unicellular

• _______________-perform specific functions (do different jobs) in a multicellular organism

• Figure 6- Interactive Art (page 20)

Cells Working Together • In multicellular organisms, cells are organized

into tissues, organs, and organ systems

• Tissue: group of similar cells that work together to perform a specific function (example brain tissue)

• Organ: made of different kinds of tissues that function together

• _____________: group of organs that work together to perform a major function

What are the levels of organization of your school building?