(Dramatization, bacteria cannot really talk):
(Dramatization, bacteria cannot really talk):
Hi, I’m an E. coli bacterium. I’m the one in the bottom center of the picture. I
am a prokaryote, which means I do not have a nucleus inside me, or any of the
organelles (like mitochondria) that larger, eukaryotes have. I get energy I need
to survive through an anaerobic process called fermentation, which doesn’t
require me to have mitochondria. I do have a cell wall though. It helps to
protect me.
Hi, I’m an E. coli bacterium. I’m the one in the bottom center of the picture. I
am a prokaryote, which means I do not have a nucleus inside me, or any of the
organelles (like mitochondria) that larger, eukaryotes have. I get energy I need
to survive through an anaerobic process called fermentation, which doesn’t
require me to have mitochondria. I do have a cell wall though. It helps to
protect me.
I’m a part of a big family and we live in your small intestine. We’re a pretty
harmless bunch and don’t really bother you much. Sometimes one or more of
us can be virulent and cause you to have food poisoning or urinary tract
infections. We’re sorry about those bad E.coli. They make the rest of us look
bad. Luckily, doctors can give you antibiotics to help you get rid of the bad
bacteria. Antibiotics work by destroying the bacteria’s cell wall.
I’m a part of a big family and we all live in your small intestine. We’re a pretty
harmless bunch and don’t really bother you much. Sometimes one or more of
us can be virulent and cause you to have food poisoning or urinary tract
infections. We’re sorry about those bad E.coli. They make the rest of us look
bad. Luckily, doctors can give you antibiotics to help you get rid of the bad
bacteria. Antibiotics work by destroying the bacteria’s cell wall.
My life is pretty simple. I grow and grow until I’m almost double in size. Then I
copy my DNA, split myself in half and, poof, I have a new brother. Because my
new brother has DNA that is exactly like mine, we are identical to one another.
This form of reproduction is called binary fission. It is an asexual form of
reproduction as it does not involve sexual activity with another organism.
My life is pretty simple. I grow and grow until I’m almost double in size. Then I
copy my DNA, split myself in half and, poof, I have a new brother. Because my
new brother has DNA that is exactly like mine, we are identical to one another.
This form of reproduction is called binary fission. It is an asexual form of
reproduction as it does not involve sexual activity with another organism.
Sometimes it’s necessary for me to exchange genetic material with another
bacterium. This is done through a process called conjugation, in which a tiny
“bridge” is made between me and another bacteria. A piece of genetic
material (DNA) is then passed through the bridge between us and combines
with our own DNA. This allows bacteria to be different from one another.
Sometimes it’s necessary for me to exchange genetic material with another
bacterium. This is done through a process called conjugation, in which a tiny
“bridge” is made between me and another bacteria. A piece of genetic
material (DNA) is then passed through the bridge between us and combines
with our own DNA. This allows bacteria to be different from one another.
(Dramatization, archaea cannot really talk):
(Dramatization, archaea cannot really talk):
Hi, I’m a type of archaea called a thermophile. I’m the one in the middle on
the right. A thermophile is a type of bacteria that loves heat (thermo = heat,
phile = to love). An archaea, like a bacteria, is a prokaryote. We don’t have a
nucleus or organelles, but we do have a cell wall. You can see from the
pictures, that we look very similar to each other and to bacteria. Some
scientists believe that, because of our DNA sequences, we are actually much
closer related to eukaryotes than to bacteria. Some scientists also believe that
because of the harsh environments that we live in, we might have been the
first organisms on Earth. So, scientists are kind of confused about us.
Hi, I’m a type of archaea called a thermophile. I’m the one in the middle on
the right. A thermophile is a type of bacteria that loves heat (thermo = heat,
phile = to love). An archaea, like a bacteria, is a prokaryote. We don’t have a
nucleus or organelles, but we do have a cell wall. You can see from the
pictures, that we look very similar to each other and to bacteria. Some
scientists believe that, because of our DNA sequences, we are actually much
closer related to eukaryotes than to bacteria. Some scientists also believe that
because of the harsh environments that we live in, we might have been the
first organisms on Earth. So, scientists are kind of confused about us.
Important things to know about me and my family:
Important things to know about me and my family:
1. We are prokaryotes!
3. We are prokaryotes!
2. We all live in very harsh, extreme environments. (Halophiles live in
very salty places, acidophiles live in very acidic places)
4. We all live in very harsh, extreme environments. (Halophiles live in
very salty places, acidophiles live in very acidic places)
And… that’s about it.
And… that’s about it.
BACTERIA
What are two defining aspects of being a prokaryote?
BACTERIA
What are two defining aspects of being a prokaryote?
1. ______________________________________________________
3. ______________________________________________________
2. ______________________________________________________
4. ______________________________________________________
How do E.coli get energy? _______________________________________
How do E.coli get energy? _______________________________________
What does the cell wall do for bacteria? ___________________________
What does the cell wall do for bacteria? ___________________________
Are E.coli harmless, harmful, or both? _____________________________
Are E.coli harmless, harmful, or both? _____________________________
What can you take to get rid of a bacterial infection? _____________________
What can you take to get rid of a bacterial infection? _____________________
What is binary fission? _____________________________________________
What is binary fission? _____________________________________________
________________________________________________________________
________________________________________________________________
When comparing asexual and sexual reproduction, asexual reproduction
creates genetically ____________________ (identical or different) offspring
while sexual reproduction creates genetically ________________________
(identical or different) offspring.
When comparing asexual and sexual reproduction, asexual reproduction
creates genetically ____________________ (identical or different) offspring
while sexual reproduction creates genetically ________________________
(identical or different) offspring.
Through what process can bacteria exchange DNA? ______________________
Through what process can bacteria exchange DNA? ______________________
ARCHAEA
ARCHAEA
What are three things that archaea have in common with bacteria?
What are three things that archaea have in common with bacteria?
1. ______________________________________________________
4. ______________________________________________________
2. ______________________________________________________
5. ______________________________________________________
3. ______________________________________________________
6. ______________________________________________________
What is one thing scientists think about archaea? ______________________
What is one thing scientists think about archaea? ______________________
_______________________________________________________________
_______________________________________________________________
_______________________________________________________________
_______________________________________________________________
Where do archaea live? ___________________________________________
Where do archaea live? ___________________________________________
_______________________________________________________________
_______________________________________________________________