Transcript Agree/disagree? - Alexmac

What do you think you know?
Mitosis and the cell cycle are identical
processes. Agree/disagree?
New cells come from
previously existing cells.
Agree/disagree?
All radiation is
harmful to
humans.
Agree/disagree?
All plant cells are green.
Agree/disagree?
Plant and animal cells contain all the
same organelles.
Agree/disagree?
Diffusion is the movement of particles
from an area of higher concentration to
an area of lower concentration.
Agree/disagree?
Cells, Tissues, Organs and
Systems
• Why should we study cells?
• http://www.youtube.com/watch?v=gFuEo2ccTPA
Cell Theory
• The cell is the smallest unit of life. In other words, the cell is
the basic living organism that shows the characteristics of
living things. (What are the characteristics of living things?)
• All living things are unicellular or multicellular.
• All cells are created from existing cells through a process
called cell division by which a cell divides into two new cells.
Some Characteristics of Living
Things
Always remember "MR NIGER D"
M=movement
R=respiration
N =nutrition
I=irritability
G=growth
E=excretion
R=reproduction
D=death
Plant and Animal Cells
What do you know about:
• Eukaryotic cells?
• Prokaryotic cells?
• Organelles?
Organism
With a nucleus
No nucleus
Eukaryote
Prokaryote
many cells
one cell
Multicellular
organism
Single-celled
organism
Animal
e.g. E coli
e.g. Amoeba
e.g. whale
Plant