Download The Cell Theory Exceptions to the Cell Theory

Unit 2: Biochemistry & The Cell
Name:
Aim #12 Cell Theory: What ideas make up the cell theory?
Date:
A) The Cell Theory: The cell is the basic unit of structure and function of all living things. Hundreds of years of cell study
have given us information about the cell known as the cell theory.
The Cell Theory
1) The cell is the _________________________ of all living things. This means that ALL living things
are made up of _________________
Ø Smallest living things are made up of ONE CELL, called _____________________ organisms
Ø Large organisms can be made of MANY CELLS, called ______________________ organisms
2) All of the organism’s ____________________________________ are carried out by ______________
or parts of cells
3) Cells ____________________ from (come from) other living (_________________________) cells,
NOT from nonliving matter
B) Exceptions to the Cell Theory: As scientists continued to study the cell they discovered facts that could not be
explained by the cell theory. These facts are called the exceptions to the cell theory.
Exceptions to the Cell Theory
1) ______________________: Are not made up of cells. They contain
DNA or RNA but needs to enter a host cell (another cell, usually in
another organism) in order to reproduce and divide
2) Where did the______________________ come from? The first cell
could not have arisen from a previously existing cell. Scientists do not know the origin (beginning) of
the first cell
C) Two Main Cell Types: All cells ___________________________, which are tiny specialized structures that
carry out life functions. Many of these organelles have an outer _____________________.
CELL TYPE
FACTS
•
PROKARYOTIC •
•
(Primitive = first)
DO NOT have a _________________
DO NOT have membrane bound organelles
Simple
•
___________ cells to inhabit Earth
EUKARYOTIC
•
•
Eu= true
Karyote = core/nucleus
•
HAVE a _______________________
HAVE membrane bound organelles
(nucleus, mitochondria, ribosome etc.)
Complex
PICTURE/EXAMPLE
Ex) Bacteria
Ex) Plants, Animals
D) Cell Structure and Function: There are MANY different types of cells. Although all cells have many
structures and organelles in common to carry out important life processes, their cellular
___________________ determines its special _________________.
Ø Do all of the cell types listed above have the same shape? ________
Ø Do all of the cell types perform the same job? ________
Ø Why do you think the sperm cell has a tail when the other cells do not?
Ø Why do you think the red blood cells are circular when the other cells are not?
E) Multicellular Organization:
a. Organelles make up
b. Cells make up
c. Tissues make up
d. Organs make up
e. Organ systems make up
Aim #12 Practice Questions