October 15, 2013
• Take out the answers for the 8 Key Concept
questions on the study guide for a homework
check!
• Warm Up: If the eyepiece of a microscope is 10x
and the objective lens is 80x what will the total
magnification of a specimen be using this
objective?
• Homework: Using the study guide review for
tomorrows test for about 30 minutes.
• Class Work: Review for tomorrows test.
1. Flagellum
2. Pilus
3. Genetic Material (DNA)
Nucleoid
4. Cell Membrane (Plasma
Membrane)
5. Ribosomes
6. Cell Wall
7. Capsule: slime layer that
can prevent white blood cells
from killing a bacterium
Cell Theory
• All living things are made up of cells.
• Cells are the smallest working units of all living
things.
• All cells come from preexisting cells through
cell division.
• Cells all have DNA that directs the activities of
the cell.
“Typical” Plant Cell
http://waynesword.palomar.edu/images/plant3.gif
Differences Between Plant
and Animal Cells
• Plants and animal cells have the same
organelles
• Plant cells have three organelles that animal
cells do not have
1. Cell Wall
2. Large Vacuole
3. Chloroplasts
Differences Between Eukaryote
and Prokaryote Cells
• Eukaryotes have organelles that have
specialized functions
• Eukaryotes have their DNA inside the
organelle we call a nucleus
• Prokaryotes do not have organelles
• The DNA in a prokaryote cell is called the
Nucleoid and is found inside the cell
membrane
What is the functional difference between the
Chloroplast and Mitochondrion?
• Chloroplast are the site of the photosynthesis
• Mitochondrion are the site of respiration
• These two processes are chemically opposite
processes.
What is a selective
permeable membrane?
A cell membrane is selectively permeable because it will allow some substances
in or out of the cell by diffusion (passive transport) and some substances in or
out by different forms of active transport. Diffusion means a substance moves
from high concentration to low concentration.
What is an antibiotic and what effects do
antibiotics have on bacteria?
• An antibiotic is a substance that has the ability to
kill bacteria.
• Because the antibiotic can kill bacteria, this
creates and environment where some bacteria
will become resistant to the affect of the
antibiotic because of genetic change and the
passing of antibiotic resistant genes between
bacteria.
• Fungus sometime are a source of antibiotic
substances for example penicillin.