Transcript Ch. 7-Cells Lecture #1 blanks

The Discovery of
Cells
7.1
I. The Cell Theory
A. ____- The basic unit of living
organisms
B. The ______ was developed by
several scientists including
Hooke, Schleiden
andSchwann.
I. The Cell Theory
C. 3 Main Ideas
1. All _______ are composed
of one or more cells.
2. The cell is the basic unit of
structure and _________ of
organisms.
3. All cells come from
_________ cells
II. Role of the Microscope
A. Before microscopes, we didn’t
know cells existed
1. People thought illness
caused by bacteria were
brought by _______
II. Role of the Microscope
B. 1st (Simple) Microscope
1. 1600’s
2. Leeuwenhoek
3. Used __ reading lenses and
light to view objects
II. Role of the Microscope
C. Compound Microscope
1. 1600’s
2. _______ observed and
named “cells”
3. Uses ______ lenses and
light to magnify objects up to
1500 x
II. Role of the Microscope
D. Microscope practice
1. Observe cork
2. Observe ________ slides
II. Role of the Microscope
E. Electron Microscope
1. 1930’s
2. Uses an ________ beam
instead of light
3. Magnifies up to _______ x
II. Role of the Microscope
4. Types of electron microscopes
a. ____- Makes a 3-D image
of the cell surface
b. ____- Magnifies
structures inside the cell
c. ____- Creates computer
images of atoms on a molecule
III. Basic Cell Types
A. _______- Small, specialized
structures in a cell
1. A.K.A. CELL PARTS
2. Surrounded by ________
III. Basic Cell Types
B. Prokaryotes (hint: pro means NO)
1. No membrane bound
organelles
2. No _______
3. No more than one cell
(Single-celled organisms)
4. No organization
III. Basic Cell Types
C. _____________
1. DOES have membranebound organelles
2. DOES have a nucleus
3. Single-celled or multicelled organisms
4. Think of these as being
more complex/organized
IV. Recap
 What are the 3 main ideas of
the cell theory?
 What is the difference
between a simple, compound
and electron microscopes?
 What is the difference
between a prokaryote and a
eukaryote?