(Prelims) MicroPara Exam 1 Flashcards
minute living things that individually are
usually too small to be seen with the unaided eye
Microbes/microorganisms
An adult human is composed of about how many microbes?
30 trillion body cells
40 trillion bacterial cells
Microbes that
live stably in and on the human body are called
human microbiome, or microbiota
a microbe can indefinitely
colonize the body as benign
normal microbiota
What is the cell wall of Bacteria?
Peptidoglycan cell wall
Microrganisms that when they have cell walls lack peptidoglycan
Archaea
Types of Archaea
- Methanogens - methane as waste product
- Extreme halophiles - live in extremely salty environments
- Extreme thermophiles - live in hot sulfurous water
True or False: Archaea can cause disease in humans
False
True or False: Fungi cannot carry out photosynthesis
True
What are the cell walls of fungi made of?
Chitin
What microbes are unicellular microbes?
Bacteria
Archaea
Protozoa
What do protozoa use to move?
- Pseudopods - extensions of the cytoplasm
- Flagella
- Cilia - short appendages for locomotion
Although other microbes have these too
Photosynthetic Protozoa
Euglena
What microbes are photosynthetic eukaryotes?
Algae
How does bacteria reproduce?
Binary Fission
Where do molds form?
mycelia
Many cell walls of algae are made of what?
Carbohydrates
What microbe produces oxygen and carbohydrates?
Algae
True or False: Viruses are cells
False
Viruses are not cells and can only be seen in an electron microscope
A visible mass of microbial cells arising from one cell or a
group of the same microbes.
Colony
A cell whose genetic material is not enclosed in a nuclear
envelope
Prokaryotes
Cell having DNA inside a distinct membrane-enclosed nucleus.
Eucaryotes
Organisms that obtain nutrients from dead organic matters
Saprophytes/decomposers
What are the 2 categories of disease caused by microbes?
- Infectious disease (colonizes the body)
- Microbial intoxications (ingests toxin)
Study of Bacteria
Bacteriology
Study of Protozoans
Protozoology
Study of Algae
Phycology
Study of Parasites
Parasitology
Study of Yeasts and Molds
Mycology