Bacteria -test

What kingdom do bacteria belong to?

Monera

Show a labelled diagram of a bacterium

Show cell membrane, cell wall, capsule, cytoplasm, chromosome, plasmid, flagella, ribosomes

What does pathogenic mean?

Disease causing

What does chemosynthetic mean

Makes it own food using energy from chemicals

Give an example of a chemosynthetic bacteria important in agriculture

Rhizobium

How is it (Rhibozium) beneficial?

Turns atmospheric nitrogen which plants can't use into nitrates and imonium compounds which plants can absorb and use

Name the different types of bacteria and give an example of a disease caused by each

Spherical - streptococcus

Name the different types of bacteria and give an example of a disease caused by each

Rod - anthrax

Name the different types of bacteria and give an example of a disease caused by each

Spiral - cholera

Are bacteria eukaryotic? Explain

No, they don't have membrane bound organelles or nucleus

What is the difference between infectious and contagious?

Infection does not require contact, contagious does require direct contact

Draw and explain a bacterial growth curve

Show lag, log, stationary, decline and survival or death, and explain each

What happens during the lag stage

Adjusting to new conditions, no reproduction

What happens during the log stage?

Exponential growth, plenty of resources and no competition

What happens during the stationary stage?

Competition, build up in toxic waste materials, death = reproduction

What happens during the decline stage?

Toxins build up, death > reproduction

What is the survival or die stage?

Bacteria must survive via endospores or die out

What is antibiotic resistance?

Not killed by an antibiotic

Give two examples of antibiotic resistance

Improper prescription, not finishing course

What is a bioreactor?

A vessel in which product is made by microorganisms or their products

Describe batch (continuous) process

Ingredients, goes through all phases, removed, purified, clean apartatus (continuous = ingredients added all the time, kept at log or stationary phase, purified, cleaned)

What is sterile nutrient agar?

Sterile - no microorganisms

What is sterile nutrient agar?

Nutrients - contains food

What is sterile nutrient agar?

Agar - jelly

How can you distinguish between bacterium and fungi on an agar plate?

Fungus - hairy/furry

How can you distinguish between bacterium and fungi on an agar plate?

Bacteria - shiny (slimy)

What is aseptic?

Has no disease causing organisms