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Biology 1000 S2 Final

Terms in this set (31)

In what other products do you think thymol could most likely be used in?
mouthwash
Strains of bacteria that survive a treatment of thymol likely do so because they process what?
A special plasmid
Which type of prokaryote is most likely found in agricultural manure?
photo autotrophs
A good company wanted to develop a new flavor of cheese. To select which type of bacteria to use, what characteristic of the bacteria should most likely be evaluated first?
Whether or not the bacteria is safe for consumption
Bacterial chromosomes have been used extensively by researchers in many experiments. Which of the following is the most likely explanation as to why bacterial DNA has been used so frequently?
They only have a single round chromosome
The DNA has a simple arrangement
The DNA is not in a nucleus and is easy to extract
(All of the above)
And endospore is which of the following?
A bacteria inside a shell in a state of hibernation
Which of these is not a shape of bacterial cells
Bulbous
Which of the following does not describe a way that bacteria clump together?
Helical
Bacteria use a pilus to do which of the following?
Share DNA with other bacteria
Most antibiotics work by doing which of the following?
Disrupting the cell wall of the bacteria
The archea differ from the eubacteria in what way?
The archea are considered older and more primitive
The archea live in very harsh environments that would kill other bacteria
The cell wall of the eubacteria contain peptidoglycan and archea do not
(All is the above)
In order to reproduce viruses need which of the following?
A cell to invade
Under perfect conditions bacteria can reproduce
Every 20 minutes
Which of the following is true of archea bacteria
They are thought to be the oldest living things on earth
They seem more closely related to plants and animals than other bacteria
They live in very hostile environments
(All of the above)
Antibiotics work well to control infections from which of the following?
Bacteria
Aerobic bacteria grow best under which of the following conditions?
And oxygen rich environment
The term Staphylococcus applies to which of the following?
A cluster of spherical bacteria
Which of the following is a key component of the cell way of Eubacteria but not Archeabacteria?
Peptidoglycan
Which of the following must have a host cell to reproduce?
Virus
What is the difference between staphylococcus and streptococcus bacteria
The staph is in clusters and the strep is in chains
A virus which invaded the cell and then simply waits is involved in which of the following?
Lysogenic cycle
In bacteria, genes which hold instructions for things such as antibiotic resistance or virulence are often found in what part of the cell?
On a plasmid
Why is an electron microscope useful when studying bacteria?
Bacteria are tiny
The most deadly toxin known to mankind is created by which of the following?
A bacteria
Why do bacteria form endospores?
It allows them to go dormant during times of distress
Where would you NOT expect to find bacteria growing?
At the deepest place in the ocean
Floating freely in the atmosphere
In your refrigerator at home
(Bacteria grow in all of these places)
Which of the following is NOT produced by bacteria?
Ice cream
Why are there no rocks from the original crust of the earth present today?
The process of weathering and erosion and plate tectonics have recycled most of the rocks that old
Which of the following is an example of spontaneous generation?
Aphids produce offspring by budding
Plant cutting can grow roots and create new plants
One bacteria can quickly become 1 million bacteria
(None of these would be considered spontaneous generation)
First organisms on earth used aerobic respiration to generate energy?
False
The oxygen of the earth's atmosphere originated in what way?
Early bacteria created it through photosynthesis
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