Why are bacteria human diseases emerging and re-emerging?

• they are becoming resistant to antibiotics
• encroachment of previously uninhabited (wild) areas
• diseases in animals mutate to cross the species barrier
• all of the above are true

all of the above are true

When DNA is transferred from one prokaryote to another via a pilus, this is called

• binary fission
• conjugation
• transduction
• transformation

conjugation

Archaea that can survive in high salt concentrations are termed:

• osmophiles
• alkaliphiles
• halophiles
• psychrophiles

halophiles

Which of the following is true about "blue-green" algae?

• they produce oxygen
• they are classified as plants
• they are heterotrophs
• all of the above are true

they produce oxygen

Archaea that can live in cooler temperatures (5-50 degrees Fahrenheit or lower) are termed

• themophiles
• psychrophiles
• osmophiles
• hyperthemophiles

psychrophiles

Which of the following structures is different when comparing bacteria to archaea?

• cell morphology
• chromosomes
• cell type
• plasma membrane lipids

plasma membrane lipids

By its name, methicillian-resistance Staphylococcus aureus (MRSA) would be what shape under a microscope?

• round
• spiral
• gram positive
• rod-like

round

Which is true of gram positive organisms?

• they are more resistant to antibiotics
• their cell walls are largely composed of peptidoglycan
• the cell wall of gram positive bacteria is then when compared to gram-negative bacteria
• all of the above are true

their cell walls are largely composed of peptidoglycan

Unlike eukaryotes that have a nucleus, prokaryotes do not contain any DNA.

• True
• False

False

A rock formed when prokaryotes precipitate minerals out of water is called

• a microbial mat
• a hydrothermal vent
• a biofilm
• a stromatolite

a stromatolite

Bacteria play important roles in:

• agriculture
• waste management
• digesting food in humans
• all of the above are true

all of the above are true

Using bacteria to clean up an oil spill is an example of

• pathogenesis
• nitrogen fixation
• bioremediation
• bacterial respiration

bioremediation

When a bacteria gets it energy from light, electrons from inorganic material, and its carbon source is carbon dioxide, it is termed a:

• chemolithoheterotroph
• chemolithoautotroph
• photolithoautotroph
• photoorganoheterotroph

photolithoautotroph

Most foodborne illness cases today are linked to produce rather than animal-based foods.

• True
• False

True

Which type of bacteria tends to be more resistant to antibiotics?

• gram positive
• gram negative

gram negative

Which of the following are the same when comparing bacteria to archaea?

• cell membrane type
• replication origins
• cell wall
• chromosome shape

cell wall

WRONG

When bacteria take up prokaryotic DNA directly from the environment, this is termed

• transformation
• conjugation
• transduction
• binary fission

transformation