KEY CONCEPT Eukaryotic cells share many similarities.

1. KEY CONCEPT Eukaryotic cells share many similarities.

2. Objectives for section 3-2 • Describe a cell’s internal structure • Identify the organelles responsible for processing proteins • State specific organelle functions • Differentiate between plant and animal cells

3. Cells have an internal structure. The cytoskeleton has many functions.

4. Cells have an internal structure. • The cytoskeleton has many functions. • supports and shapes cell • helps position and transport organelles • provides strength • assists in cell division • aids in cell movement

5. Several organelles are involved in making and processing proteins. • The nucleus stores genetic information. DNA!

6. Several organelles are involved in making and processing proteins. • Many processes occur in the endoplasmic reticulum. • Similar to a highway system

7. Several organelles are involved in making and processing proteins. • There are two types of endoplasmic reticulum. • rough (ribosomes) endoplasmic reticulum • smooth endoplasmic reticulum

8. Several organelles are involved in making and processing proteins. (continued) • Ribosomes link amino acids to form proteins.

9. Several organelles are involved in making and processing proteins. (continued) • Golgi Apparatus processes, sorts, and delivers proteins. • Similar to a packaging center (UPS)

10. Several organelles are involved in making and processing proteins. (continued) • Vesicles are membrane-bound sacs that hold materials. • Often paired with Golgi Apparatus vesicles

11. Other organelles have various functions. • Mitochondria supply energy to the cell. • Powerhouse of the cell - “Mighty Mitochondria” • Has own DNA

12. Other organelles have various functions. • Vacuoles are fluid-filled sacs that hold materials.

13. Other organelles have various functions. • Lysosomes contain enzymes to digest material. • Similar to sanitation department

14. Other organelles have various functions. • Centrioles are tubes found in the centrosomes. • Centrioles help divide DNA. • Centrioles form cilia and flagella. top view Side view

15. Plant differ from animal cells in three ways: cell walls, chloroplasts, and large central vacuole. • A cell wall provides rigid support.

16. Plant differ from animal cells in three ways: cell walls, chloroplasts, and large central vacuole. • Chloroplasts convert solar energy to chemical energy. • Has own DNA

17. Plant differ from animal cells in three ways: cell walls, chloroplasts, and large central vacuole. • Large central vacuole stores water