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Terms in this set (100)
Main difference between archaebacteria and eubacteria
Archaebacteria lack peptidoglycan, eubacteria have peptidoglycan
Extreme environments in which archaebacteria can live
Hot, salty, or muddy with no oxygen
Shapes of bacteria
coccus, rod (bacillus), helical (spirillum)
Violet stain that indicates bacterial cell wall with lots of peptidoglycan
Red stain that indicates a second layer of lipids and carbs
Flagella, pili, lash, snake, spiral
Whiplike structures for movement
Shorter and more rigid than flagella; move DNA for sexual reproduction
Absorbs sunlight and uses it to make food
Absorbs chemicals and uses them to make food
Capture sunlight for food but need organic compounds for nutrition
A type of photoautotroph that is found near water surfaces and is usually the first to colonize the site of a natural disaster
Needs oxygen to live
Cannot live with oxygen
Can live with or without oxygen
How many chromosomes does bacteria contain?
Functions of bacteria
Decomposers, nitrogen fixers, suck water out of feces in human intenstinal tract
Break down organic matter and release nutrients back into ecosystem
Fix nitrogen from atmosphere into a usable form for plants
Viruses are made of... (genetic info)
RNA or DNA, but not both
Protein coat in virus that tricks the cell to let the virus in
Are viruses cells?
Which is smaller: bacteria or viruses?
Which have more complicated shapes: bacteria or viruses?
A virus that infects bacteria (a bacter-eating virus)
Viruses cause disease by...
Invading healthy cells
Viruses are host specific, meaning
Specific viruses enter specific host cells.
What is used to treat a virus?
What is used to treat bacteria?
Help body build up immune system
Two cycles in viruses
Lytic and lysogenic
Retroviruses don't have...
How do retroviruses work?
Inject RNA into host; RNA turns into DNA; DNA intertwines with DNA of host
Viroids and prions both are made of...
only RNA, not DNA
Small, circular RNA molecules that infect plants
Infectious proteins that cause degenerative diseases in animals
Viral diseases in humans
HIV, polio, HPV, measles
Viruses that appear suddenly or are new to medical scientists
Lytic cycle __________________ the host cell.
The genetic material of a bacteriophage, incorporated into the genome of a bacterium
Viruses do not have...
Cell wall, cell membrane, or nucleus
Grow or reproduce on their own
Viruses __________________ living cells and force them to....
Invade; make more viruses
Bacteria are made up of how mnay cells?
Cell wall, usually a cell membrane, but no nucleus
Are all bacteria capable of movement?
No only some
Some bacteria can break down food sources through a process called...
Some bacteria have ______________________ and can carry out photosynthesis.
Bacteria can be treated with antibiotics, but some bacteria...
Became resistant to antibiotics
Fungi are made up of how many cells?
One or many
Bodies of many-celled fungi are composed of __________________________ and can appear ___________________ or _____________________.
Tiny threads; fuzzy; almost solid
Fungi do not have....
Cell wall, cell membrane, nucleus
Function of fungi
Fungi live by absorbing nutrients from...
Other living things or dead/decaying organisms
Example of fungi
Yeast (fuzzy, single-celled), mushroom (solid)
Yeast break down food sources through...
How many cells do protists have?
One or many
Protists can be both....
Microscopic and macroscopic
Some have cell walls, all have defined cell membrane and defined nucleus
Protists vary in...
How they obtain food
Three main groups of protists
Algae, protozoa, water and slime molds
Plant-like, able to carry out photosynthesis
Animal-like; feed on prey or survive as parasites; always single-celled; sometimes capable of movement
Water and slime molds
Fungus-like; absorb food from the environment
Bactera: eukaryote or prokaryote?
Fungi: eukaryote or prokaryote?
Protist: eukaryote or prokaryote?
Green pond water
Irish potato blight
Streptococcus thermophilus (yogurt)
Zoster virus (chicken pox)
AIDS is near...
Red blood cells
Algae (is an example of)
Streptococcus pyogenes (strep throat)
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