1. Recognized as present in all but bacterial and blue-green algae cells.2. Contains chromosomes which were stained and observed in 1888.3. Goes through a series of complex changes during cell division.4. Surrounded by a double, porous membrane. If pierced, the cell will die.5. Cells which have this removed have shortened life spans and cannot reproduce.6. Most genetic material is found here.

STATION #1

1. Found throughout the cytoplasm in plant and animal cells.

2. Appears as a channel system of double membranes that is connected to the outer nuclear membrane.

3. Can be rough or smooth

STATION #2

1. Found in plant and animal cells but not in

bacterial cells.

2. Average number is 200-300 in cells. The

number varies from one in some algae cells

to 1000 in muscle cells.

3. Can move freely within a cell.

4. Discovered to be double membrane bound.

The outer membrane is smooth while the

inner membrane is folded.

5. Contains 7 different enzymes.

6. Staining indicates energy ”release”

processes.

7. Location of most oxygen uptake in the cell.

8. Location of carbohydrate breakdown in

cell.

STATION #3

1. First discovered as particles centrifuged from liver cells.

2. High levels of enzyme activity were discovered when the single surrounding membrane was broken.

3. Abundant in cells that secrete enzymes.

4. 24 different digestive enzymes found inside.

STATION #4

STATION #5

Chloroplast

1. Discovered in 1884 to be involved in oxygen production and light absorption.

2. Found to contain enzymes for joining carbon dioxide molecules together.

3. Found to be most abundant in plant cells with light exposure.

STATION #6

1. Found in all plant and animal cells.

2. Are attached to the outer nuclear membrane and the rough ER.

3. Abundant in cells engaged in protein synthesis

4. Very, very small (observe the scale is only 50nm, much smaller than the other pictures

STATION #71. The cell part to be described in print in 1665 by Robert Hooke.

2. Located outside the cell membrane in plants and bacteria.

3. Composed of cellulose, the world’s most common organic molecule (found in wood)

STATION #8

1. First seen as a black network in silver stained cells.

2. Not definitely identified until after the invention of the electron microscope.

3. Made of flattened membranes, tubes and vacuoles which are filled by nearby smooth ER.

4. Abundant in active secretory cells (cells that secrete or release many particles).