3-1: Cell Theory

Assignment 3-1:Cell Theory

EQ: Why is the cell considered to be the basic unit of life?

OBJECTIVES:

 - Describe the scientific theory of cells (cell theory) and relate the history of its discovery to the process if science.

 - Compare and contrast the structure and function of various types of microscopes

KEY TERMS: Cell Theory, Cytoplasm, Organelle, Prokaryotic Cell, Eukaryotic Cell

1. Define the Key Terms listed above.

2. Use your textbook (pages 70-71) to create a timeline of important people and events (e.g., specific advancements in technology) that aided in the discovery of cells and the later development of the cell theory. Be sure to include the following, and for each, include a brief description.

• Leeuwenhoek
• Robert Hooke
• Schleiden
• Schwann
• Virchow

3. Summarize the 3 main parts of the cell theory.

4. Use a Venn Diagram to compare and contrast the 2 main types of cells: Prokaryotic and Eukaryotic.

5. Draw an example of a Prokaryotic Cell  and a Eukaryotic Cell into your notebook.

HOMEWORK: Suppose you travelled to Mars and found a new type of life. Applying the cell theory, what can you say for certain about this organism?

Assignment 2-4: Enzymes

Assignment 2-4 & 2-5: Chemical Reactions & Enzymes

EQ: What role do enzymes play in living things and what affects their function?

OBJECTIVES: 

-Explain the role of enzymes as catalysts that lower the activation energy of biochemical reactions. 

-Identify factors, such as pH and temperature, and their effect on enzyme activity.

KEY TERMS: Chemical reaction, reactant, product, bond energy, equilibrium, activation energy, exothermic, endothermic, catalyst, enzyme, substrate.

BELLWORK: Watch Amoeba Sisters Video HERE.

Soda cracker challenge! Your saliva contains an enzyme called amylase, which will help breakdown the starch in a soda cracker into sugar. After a while, the soda cracker should start to taste sweet. 

READING Pages 52-58

1. Define the key terms listed above.

2. Draw an energy graph for an energy-Absorbing reaction. Label the X-AXIS, Y-AXES, REACTANTS, PRODUCTS, and ACTIVATION ENERGY. See figure 4-3 on page 54 for help.

3. Draw an energy graph for an energy-Releasing reaction. Label the X-AXIS, Y-AXES, REACTANTS, PRODUCTS, and ACTIVATION ENERGY. See figure 4-3 on page 54 for help.

4. Draw an energy graph for a reaction that contains Enzymes. Label the X-AXIS, Y-AXES, REACTANTS, PRODUCTS, ACTIVATION ENERGY WITHOUT ENZYME, ACTIVATION ENERGY WITH ENZYME, REACTION PATHWAY WITHOUT ENZYME, and REACTION PATHWAY WITH ENZYME. See figure 5-1 on page 56 for help.

5. Explain the function of enzymes in living organisms.

6. List 3 things that can affect the activity of enzymes. 

Go HERE to conduct an experiment on the effect of temperature on enzyme activity.  Please complete the worksheet by writing all answers on a separate sheet of paper that will be turned in. You will work with a lab partner on this.