Tour of the Cell

Who created the compound microscope in 1590?

Who discovered cells in a cork?

Early 1700's - Von Leeuwenhoek makes many observations of cells incuding _____.

Which microscope uses visible light to illuminate the object?

Which microscope is inexpensive?

Which microscope can examine both live and dead objects?

Which microscope uses a bean of electrons instead of light?

Which year was the Electron Microscope invented?

Advantages of a Electron Microscope:
1.
2.

Disadvantages of a Electron Microscope:
1.
2.
3.
4.

Cyto = ____
Ology = _____

After observing cells in a cork, Robert Hooke coined the term cells in ____.

Robert Brown discovered the nucleus in ____.

M.J. SChleiden, stated all plants are made of cells in ____.

T. Schwaan stated all aminals are made of cells in ____.

All living matter is composed of ____________________.

The cell is the ______ and ______ unit of life.

Lack a nucleus and other membrane bounded structures.

Have a nucleus and other membrane bounded structures.

Basic Cell Organization:
1.
2.
3.
4.

Separates the cell from the enviroment.

Boundry layer for regulating the movement of materials in/out of a cell.

Cell substance between the cell membrane and the nucleus.

The "fluid" part of a cell. Exists in two forms:
gel - thick
sol - fluid

Small Organ

Formed body in a cell with a specialized function.

Important in organizational structure of cells

Way to form compartments in cells to separate chemical reactions.
Keeps various emzymes separate in space.

Most conspicuous organelle.
Usually spherical, but can be lobed or irreagular in shape.

Nucleus Structure:
1.
2.
3.
4.

Double membrane separated by a 20-40 nm space
Inner membrane supported by a protein matrix which gives the shape to the nucleus.

Allows materials in/out of nucleus.
Regular holes throughboth membranes
100 nm in diameter
protein complex gives shape

Dark staining area in the nucleaus
0-4 per nucleus
Storage area for ribosomes

DNA and Protein in a loose format. will form the cells chromosomes.

Control center for cell.
Contains the genetic instructions.

Protein Synthesis is _____________.

No membrane
2 subunits made of protein and rRNA

Free in the cytoplasm
Membrane bound

Membranes that are related through direct physical continuity or by the transfer of membrane segments called vesicles