Cell Theory
Who first discovered cells?
R. Hooke
What are cells?
Smallest unit of living matter
Mitosis function and division
cells that repair the body
Heal and grow
parent divide once into 2 daughter cells
How do you see through the microscope?
Eye piece
What is a cell organelle?
Function like tiny organs to keep cells alive
What are three components of cell theory?
1. All living organisms are composed of one or more cells.
2. The cell is the most basic unit of life.
3. all cells come from existing cells.
Three jobs a cell does
digest food
carry messages to the brain
fighting disease
meiosis function
create new life
the parent cell divides twice and creates four cells instead of two
First compound microscope?
1590 H. Janson
Functions of: cell membrane, permeable, cytoplasm
Cell membrane: holds the cell together
permeable: lets thing in and keeps thing out
cytoplasm: jelly like substance allows organelles to move around
The 1830's in Cell Theory
1833 R. Brown discovered cell nucleus
1838
1839
Cells come from existing cells by what?
Division
Characteristics of prokayotes
single celled organism
no nucleus
no membrane bound organelles
What is used to help see in a microscope?
mirror
Name the 8 organelle parts
1. Nucleus
2. Mitochondria
3. Ribosomes
4. Endoplasmic Reticulum
5. Golgi Apparatus
6. Lysosomes
7. Chloroplasts
8. Vacuoles
What is the smallest unit in a living thing?
A Cell
What's life function occurs within a cell?
An Organism
Characteristics of eukaryotes
multicellular
has nucleus
has membrane bound organelles
A microscope works using a process called
Refraction
Cells take in nutrients from?
other cells
How often do cells divide in the human body?
about 2 trillion times a day
The cell chain
cells
tissue
organs
organ systems
the body
prokaryote types vs. eukaryote types
prokaryotes: archaea and bacteria
eukaryotes: plant and animal
Name all the parts of the Microscope
eye piece
course adjustment
arm
fine adjustment
base
body
revolving nose piece
objectives
stage
mirror
Name 8 organelles and their functions.