• The amount of detail microscopes allow us to see varies from one type instrument to another.

1. What does the cell theory state?
   Answer
2. Why are cells so tiny?
   Answer
3. How do the micrographs produced by three of the most common types of microscopes differ?
   Answer

Simulation

• Cell Size

• A cell is highly organized and contains organelles that carry out specific functions.
• The plasma membrane regulates the entrance and exit of molecules and ions into and out of the cell.
• The cell has a cytoskeleton composed of microtubules and filaments; the cytoskeleton gives the cell a shape and allows it and its organelles to move.
• The nucleus, a centrally located organelle, controls the metabolic functioning and structural characteristics of the cell.
• A system of membranous canals and vesicles works to produce, store, modify, transport, and digest macromolecules.
• Cilia and flagella are essential organelles for cellular interactions with the cellular environment.
• Mitochondria are organelles concerned with the conversion of glucose energy into ATP molecules

1. What is an organelle?
   Answer
2. What is the structure and function of the plasma membrane?
   Answer
3. What types of fibers are in the cytoskeleton and what do they do?
   Answer
4. Why is a nucleus indispensable to cells?
   Answer
5. What role does each member of the endomembrane system play in cells?
   Answer
6. How do you know that cilia and flagella are essential to human cells?
   Answer
7. What is the structure and function of a mitochondrion?
   Answer

Essential Study Partner

• Energy Organelles
• Cytoskeleton
• Membrane Structure
• Diffusion
• Osmosis
• Facilitated Diffusion
• Active Transport
• Exo/Endocytosis

Art Labeling Activity

• Animal Cell I
• Animal Cell II
• Anatomy of the Nucleus
• Golgi Apparatus Structure
• Mitochondrion Structure
• The Cytoskeleton
• Fluid-Mosaic Model of the Plasma Membrane Structure I
• Fluid-Mosaic Model of the Plasma Membrane Structure II

Simulation

• Active Transport

Animation Activities

• Endocytosis and Exocytosis(English)
• Endocytosis and Exocytosis(Spanish)
• Lysosomes(English)
• Lysosomes(Spanish)
• How Diffusion Works

• The cytoplasm contains metabolic pathways, each a series of reactions controlled by enzymes.

1. How does the process of cellular respiration exemplify cellular metabolism?
   Answer

Bioethical Case Study

• Embryonic Stem cells

Essential Study Partner

• Enzymes
• Pathways
• Glycolysis
• Krebs Cycle
• Electron Transport System

Animation Activities

• How Glycolysis Works
• How Enzymes Work