Making more
Some bacteria take as little as _________ to double in number.
How long is 20 minutes?
A cell with no organelles that are surrounded be a membrane
What is a prokaryote?
a bacterium's DNA and ribosomes enclosed in a tough case that can survive unfavorable conditions
What is an Endospore?
First, best defense to avoid getting sick
WASH YOUR HANDS THOROUGHLY!!!
Bacteria that live in extreme environments
What are Archaebacteria?
Living cell in which a virus replicates
What is a host cell?
single-celled organisms that lack a nucleus and organelles with membranes; prokaryotes
What is a bacteria?
protein coat surrounding a virus
What is a capsid?
substance prepared from killed or weakened pathogens and introduced into a body to produce immunity
What is a vaccine?
A virus which immediately attacks a cell
What is an active virus?
A form of asexual reproduction in which one cell divides to form two identical cells.
What is binary fission?
a nucleic acid (either DNA or RNA) surrounded by a protein coat that uses other cells to reproduce
What is a virus?
process through which bacteria share their plasmids
Conjugation
A cell structure that controls which substances can enter or leave the cell
Cell membrane
A virus present in a cell, yet not causing any detectable effect.
What is a latent virus?
3 shapes of bacteria
What are spirals, rods and spheres?
whiplike tails found in one-celled organisms to aid in movement
What is a flagellum?
the microorganisms in a particular environment
microbiome
The type of cells that have a cell membrane
RNA or DNA
What is a nucleic acid?
5 limiting factors for bacteria
1. temps too high or low
2. Acidity too high or low
3. build up of waste material
4. not enough Oxygen
5. not enough food
6. Improper moisture
small, circular piece of DNA located in the cytoplasm of many bacteria
What is a plasmid?
Conditions in the environment that put limits on where an organism can live
What is a limiting factor?
Only effective against bacteria, but no effect on a virus
What is an antibiotic?
5 benefits of bacteria
What is 1. kills bad bacteria, 2. transforms nitrogen so plants can use it, 3. digests cellulose, 4. decomposes, 5. makes many foods, drinks & medicines
Viral Reproduction
What is
The virus attaches to the host cell; injects its nucleic acid
into the host, and uses the
cell’s own cellular machinery to
make more viruses. Then bursts the cell to go infect more cells.
Bacteria and Archaebacteria are the only two cell types that are
Prokaryotic
Scientists do not classify viruses as____________
What is "living"?
Last year we learned that the best way to cover our cough was____________
How do you cough into your elbow?
If I'm sick and I feel better quickly after taking an antibiotic, then my illness was caused by a _____________