Cell Biology and Disease

Activity 38C: Microbes, Plants, and You

December 4, 2014

Activity 38C: Microbes, Plants, and YouDecember 4, 2014

Getting Started: Are all living organisms single celled (made of one cell) or multi celled (made of many cells)? Explain your answer.

Introduction: Read pg.C-40 Have scientists seen cells in every living organism?

Microbes, Plants, and YouSchleiden, Schwann, and Siebold observed cells in plants, animals, and microbes. Since then, scientists have observed cells in every living organism. What do these cells look like?

What structures do different cells have in common? What structures are found only in some cells?

38C

Challenge: Rewrite the challenge question in your own words.

Key Words: Cell, Cell Membrane, Cytoplasm, nuclear membrane, Nucleus, organelles

Procedure: Have you read and do you understand the procedure on pg. C-41 part A? Write one sentence that describes what you will be doing.

Results: Double Bubble Map

Drawings 35.3What you will be drawingWhat we sawDiscussion

Analysis: Answer Analysis Questions 1 through 5.

Reflection: None

Cheek Cells

Amoeba Cells

Green Plant Cell

Venn Diagram

Animal CellPlant Cell

Drawing Organizer

What You Will Be Drawing

1. Cheek Cell • This is a prepared slide that has been steralized.

2. Green Plant Cell• Simply drag the toothpick across the “under-

portion” of the leaf and place it in the water 3. Microbe Cell (Ameoba)

• This is a prepared slide

Discussion

• Describe each of the cells you have viewed under the microscope.– Green Plant – Cheek cell – Microbe Cell

Cell Membrane, Cell Nucleus, Nuclear membrane, Cytoplasm, Organelle

Cell Organelles

Organelles- “tiny organ”, structure in the cell that helps cell carry out day to day function.

• Cell Wall – (found in plants), provides structural support and protects the cell.

• Cell Membrane – regulates what goes into and out of the cell.

• Mitochondria – provides energy for the cell• Vacuole- fluid filled sac, (water, food, waste) In

plants the vacuole is large.

Organelles (cont)

• Chloroplast – (found in plants) site of photosynthesis

• Cytoplasm – inter-cellular fluid, hold organelles and site of reactions

• Nucleus – control center of cell, where DNA is stored

Inside an Plant Cell

Inside an Animal Cell

Question 1

• Compare the three kinds of cells you have just observed.– What structure do they have in common? Explain– How are the cells different? Explain

Question 2

• Look at the Double Bubble Map you drew at the beginning of the activity. Make any additions or changes now that you have observed plant and animal cells with a microscope.

Question 3

Did you find evidence in this activity that the human body is made up of cells? Explain

Question 5

• Do you think there are any small structures (organelles) inside the cheek cell other than the nucleus? What evidence do you have to support your answer?

Question 6

• Do you think there are any small structures (organelles) inside the onion or green plant cell other than the nucleus? What evidence do you have to support your answer?