Exam 6 - Microbiology Flashcards
what is a cilia?
E6.1-15
Hair-like structures that move like oars
E-15
How do bacteria reproduce?
binary fission; where one bacteria replicates itself and divides in half, creating two new cells that are genetically identical to the original parent cell
basically mitosis
What organisms are decomposers?
Bacteria and Fungi
B 6.1-2
Describe the peptidoglycan cell wall of bacteria
C6.1-1
It is a thin layer of peptidoglycan.
What is a vaccine, what does it do.
D6.1-4
A vaccine is weak or dead viruses injected into you to teach your white blood cells how to kill that kind of virus or bacteria to prevent you from getting it in the future.
What color are gram-positive bacteria?
Purple
Is Fungi a plant or an animal
E6-1.2
Neither
What is the jelly-like substance in a pietri dish that is rich in nutrients called?
The jelly like substance is called agar.
b6.1-3
Define Conjugation
What happens when a bacteria gives plasmids/traits to neighboring bacteria
F 6.1-1
What do aerobic bacteria require to survive?
B6.1-3
Oxygen
B6.1-3
What is the predominant group of tiny organisms in a drop of pond, lake, or ocean water?
Protists
how do amoebas eat their food?
E6.1-2
they use pseudopods to engulf their food/prey.
Name some protists that function as producers, contributing to Earth’s oxygen through photosynthesis.
Algae and plankton.
What do bacterial growth colonies typically appear as on a pietri dish?
A6.1-3
Slimy, oily spots
A6.1-3
What is the primary role of some protists like paramecium and amoeba?
They are consumers that feed on other organisms.
What are the spherical shape/type of bateria called?
Coccus
C6.1-1
how do fungi reproduce?
E6.1-2
they release tiny spores and they float through the air and grow new fungi in favorable conditions
On a pietri dish, Fungi colonies typically appear as __________
A6.1-3
Powdery, fuzzy mats
A6.1-3
What is bacillus?
Bacillus is characterized as rod-shaped and a is another type of bacteria.
C6.1-1
A bacteria from the moon got onto a spaceship and came back to earth. As soon as the bacteria entered the atmostshpere it was damaged and died before touchdown. Researchers think this bacteria is an anaerobic. Are they correct? If not what is it?
A 6.1-3
The reasearchers were incorrect and the bacteria is an obligate anaerobe.
A 6.1-3
Describe anaerboic bacteria
E-15
bacteria that can survive in the absence of oxygen
E-15
What do Bacteriophages infect?
D 6.1-4
Prokaryotic cells (like bacteria)
D 6.1-4
Some examples of Fungi are…
E6-1.2
Mushrooms, Molds, Lichens, etc.
What is the “life” cycle of a virus
what are the steps in order
D6.1-4
- Virus attaches to cell and inject viral genome
- Viral DNA goes to host genome
- Host replicates the viruses genome and protein capsid to recreate the virus
- Release
- pt1. More viruses
- pt2. Host cell dies
What is a Capsid?
D 6.1-4
A protien coat that houses nucleic acid genome (DNA or RNA) inside.
D 6.1-4
