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virus bacteria gwinnett county
Viruses and bacteria review for 9th grade biology in Gwinnett County
Are bacteria cells prokaryotes or eukaryotes?
Are bacteria single-celled or multicellular?
What are the three shapes of bacteria?
What is Anthrax?
a rod-shaped bacteria transmitted through the air and it purplish when dyed
What are three examples of bacteria?
streptococcus pnuemoniac(strep throat and pnuemonia)
Is bacterial meningitis or viral meningitis worse?
True or false-bacteria have cell walls
What is unique about a bacteria's chromosomes?
there is one circular chromosome
What is the outer capsule on a bacteria used for?
What are flagella?
whip-like protrusions that allow a bacteria to move
What are archaebacteria?
that live in extreme conditions
love high temperatures and acid
methane gas(produce methanogens)
they usually do not need oxygen or are
What are eubacteria?
that are found in diverse environments
most cell walls contain peptidoglycan(carbohydrates)
they form colonies or clumps or flaments
Bacteria can be one or more of the following...
Are viruses cells? Why not?
Viruses are NOT cells because viruses do not grow and have no life span, viruses do not use energy, and viruses reproduce but only in other cells by using that cell's energy
What are viruses made of?
They are composed of a nucleic acid (DNA or RNA) and surrounded by a protein coat called a capsid. Some viruses also have additional viral envelopes.
What is a capsid?
A protein coat surrounding a virus
What are the three possible shapes of a virus?
Viruses' _ allow them to attach only to specific cells. Thus, they can only infect certain organisms, some can affect several different speicies
What is a bacteriophage?
A virus that infects a bacteria
Label the parts of the bacteriophage.
What are the steps to the lytic cycle?
What is different of the lysogenic cycle compared to the lysic cycle?
the lysogenic cycle is the same as the lytic cycle exceot the viral DNA joins the host cell DNA