Download document 8378905

Name:_____________________________Class:________Date:________
#_____A HO
THEY ARE EVERYWHERE!!!

_______________
:


outer covering
that protects the
cell
Cell Membrane

Controls what
goes in and out of
the cell (also
called
______________
membrane)

Cytoplasm


Ribosomes


________-like material
inside the cell
membrane
Chemical factories
where ___________are
produced
____________

Genetic material

Contains instructions
for all of the cell’s
functions

Flagellum

Plural Flagella

Long, whip-like
structure to help cell
______________

May have many, 1, or
none
Most _________have
any & are carried from
place to place by:

 ______________
 Water currents
 Other objects

_________(Coccus)

Spherical

Bacilli (Bacillus)

_______-shaped

Spirilla (Spirochetes)

___________Shaped

PROKARYOTES- do not have an organized
__________________


Most known prokaryotes are
_______________________
Archaea (________known)





Can move
Get energy
Can reproduce (usually asexually)
Very small and simple
_________________-have an organized nucleus

US!!!!!!
When bacteria have:
1. Plenty of ________________
2. Correct temperature
3. Suitable conditions
they thrive and ______________frequently.

Some can reproduce as often as every 20
minutes!!!!!!
Asexual


Involves only ___________ parent and produces
offspring identical to the parent

Most bacteria reproduce this way- it is called
_______________FISSION
1. Cell enlarges
2. Cell duplicates _____________
3. Cell and DNA copy start to separate
4. Cell divides into 2 separate cells (________________)

Sexual


_________parents combine their
genetic material to produce a
new organism, which differs
from both parents
______________________occurs
 Have to be really special
conditions

Called:
 CONJUGATION
http://www.youtube.com/watch?v=OEdX4MaMFE
http://trc.ucdavis.edu/biosci10v/bis10v/
week7/bacterial_conjugation.mov

Endospore Formation


Sometimes conditions are harsh for bacteria to
survive
Form Endospores for survival
 ____________________-small, rounded, thick-walled,
restless cell that forms inside a bacterial cell
 Contains cells genetic material & ___________________

Bacteria must have:



A source of food
A way of breaking down the food to release its
energy
Bacteria are classified on how they get their
_____________________
Autotroph (__________________)

Make their own food:

Capture and use ____________energy (like plants do)
Use energy from _______________substances in their
environment to make food
Examples: bacteria in pond cause the green cloudy scum in
water, bacteria in hot springs use chemical energy to make
food
1.
2.

Heterotroph (_________________)

Consume other organisms or the food other organisms
make
 Example: bacteria in yogurt breaks down the sugars in milk
for food

______________________

Break down and feed off of dead organisms
 Saprophytes
 Break down dead leaves in the fall


Don’t all have a cell ____________
3 types

_________________lovers
 Found in really hot environments
 Ocean vents, hot springs, geysers

_________________lovers
 Found in areas with high salt content
 Oceans, The Dead Sea, Great Salt Lake

_________________lovers
 Found in swamps or animal intestines
 Really stinky!!