Micro Resit Revision

Micro Resit Revision

By Elaine McGinnis

Bacterial Morphology

​How much do you know?

What are the main shapes?

What are the main arrangements?

Do you know any names examples of species?

Some text here about the topic of discussion

Multiple Choice

Which of these is not a bacterial morphology

• Cocci

• Bacilli

• Spirilli

• Roddi

Fill in the Blanks

A pair of rod shaped cells are called

bacilli

Fill in the Blanks

A cluster of round cells are called

cocci

Bacterial Structures

​How much do you know?

Do you know the function of:

cell wall, cell membrane, capsule, flagella, pili, ribosomes, genome etc?

Multiple Choice

Which structure provides a semi permeable barrier around the cell?

• Cell Membrane

• Cell Wall

• Capsule

Multiple Choice

Which structure protects cell from osmotic effects

(prevents a bacterial cell from bursting)?

• Cell Membrane

• Cell Wall

• Capsule

Multiple Choice

Which structure is circular and contains genes that are not required for life but are instead useful extras ( e.g. antibiotic resistance)

• Chromosome

• Plasmid

Multiple Choice

Which structure is the site of protein synthesis?

• Chromosome

• Mitochondrion

• Ribosome

• Pilus

Multiple Choice

Which structure can be used to transfer genetic material during bacterial conjugation?

• Chromosome

• Mitochondrion

• Ribosome

• Pilus

Bacterial Growth Curve

​How much do you know?

Can you draw and correctly label a growth curve?

Do you know what the appropriate axis labels are?

Can you describe what is happening at each stage to explain the shape of the graph? ​

Multiple Choice

The correct Y-axis label for a bacterial growth curve is ...

• Time

• Time (hours)

• Bacterial Number

• Log10 Bacterial Number

Multiple Choice

What might cells be doing in the lag phase?

• synthesising enzymes

• adjusting their metabolism

• repairing damage

• adapting to a new environment

• All of these.

Open Ended

Death rate equals division rate in which phase?

Factors affecting growth

​How much do you know?

Do you know the meaning of the following terms?

​

Pschycrophile, cryophile, mesophile, thermophile, acidophile, neutrophile, alkalophile, aerobe, facultative anaerobe, anaerobe, microaerophile.

Multiple Select

Which of these relate to temperature? (Select any that apply)

• Neutrophile

• Psychroplile

• Aerophile

• Mesophile

• Thermophile

Multiple Choice

A mesophile placed in cold conditions would?

• grow faster

• grow slower

Multiple Choice

An alkalophile placed in acidic conditions?

• grow faster as this is their optimum environment

• grow slower as their enzymes denature

Multiple Choice

Which type of microbe would be most adversely affected by normal atmospheric oxygen concentrations.

• obligate anaerobe

• Obligate aerobe

• Facultative anaerobe

Bacterial habitats

​Study this list for 1 minute

Water – Vibrio cholerae, cyanobacteria

Human body – Lactobacillus, Streptococcus, Staphylococcus

Soil – Bacillus anthracis, Rhizobium, Bacillus subtilis

Room surfaces – Micrococcus luteus

Multiple Choice

Which of these were present in water?

• Micrococcus luteus

• Rhizobium

• Streptococcus

• Vibrio cholerae

Multiple Choice

Which of these were present in soil?

• Lactobacillus

• Rhizobium

• Streptococcus

• cyanobacteria

Beneficial bacteria in the body

​Look at these examples - where are they found?

Lactobacilli  (e.g., L. crispatus / L. iners)

Streptococcus sanguinis

Bifidobacteria bifidum

Escherichia coli

Multiple Choice

Which bacteria secrete acid maintaining a pH of 3.5 – 4.5 and inhibiting the growth of Candida albicans (yeast).

• Lactobacillus iners

• Streptococcus sanguinis

• Bifidobacteria bifidum

• Escherichia coli

Multiple Choice

Which bacteria produce bacteriocins against other bacteria of the same or closely-related species e.g. Salmonella and Shigella

• Lactobacillus iners

• Streptococcus sanguinis

• Bifidobacteria bifidum

• Escherichia coli

Multiple Choice

Which bacteria produce compounds which prevent growth of gram positive and gram-negative pathogenic cocci that cause cavities.  

• Lactobacillus iners

• Streptococcus sanguinis

• Bifidobacteria bifidum

• Escherichia coli

Multiple Choice

Which of these does NOT cause food poisoning?

• Bifidobacterium bifidum

• Salmonella

• E.coli 0157

• Clostridium botulinum

Multiple Choice

Which of these are found in the soil AND are beneficial?

• Rhizobium

• Clostridium tetani

• Listeria monocytogenes

• Bacillus Anthracis.

Bacteria in food/ medicine

​Do you know examples of how we use bacteria commercially?

Yogurt? Wine?

Antibiotics?

Genetic engineering?

Multiple Choice

Which of these are used in the manufacture of yogurt?

• E coli

• Streptomyces

• Lactobacillus bulgaricus

Multiple Choice

Which of these are used in the manufacture of antibiotics?

(think of the names of antibiotics you know?)

• E coli

• Streptomyces

• Lactobacillus bulgaricus

Fungal structures & Repro.

​How much do you know?

Do you know the functions of the:

cell wall, hyphae, septa, sporangia, zygospore, etc,

​

Do you the asexual and sexual reproductive structures in zygomycetes?​

​

Multiple Choice

What is chitin?

• A protein found in the

  gelatinous surface layer

• A polysaccharide found in the

  cell wall

Multiple Choice

Which type of hyphae bears spores?

• vegetative hyphae

• aerial hyphae

Fill in the Blanks

Organelles that block septal pores are called

bodies

Fill in the Blanks

Hyphae with no septa are desribed as coenocytic or

Multiple Choice

A zygospore is the result of _________ reproduction

This type of reproduction involves ________

• Sexual reproduction

  mitosis

• Asexual reproduction

  mitosis

• Sexual reproduction

  Meiosis

• Asexual reproduction

  Meiosis

Multiple Choice

Sexual reproduction requires male and female fungi.

True or False?

• True

• False

Multiple Choice

Zygospores are produced in zygomycete fungi only.

What is the fruiting body of the ascomycete fungi called ?

• an ascocarp

• a basidium

• a sporangium

• an ascospore

Fill in the Blanks

The sac like swelling at the end of the aerial hyphae in Mucor hiemalis are called

Fungal nutrition

​How much do you know?

Do you know the mechanism?

How do they get their food?

Do you know the terminology involved in this?

​

Some text here about the topic of discussion

Fill in the Blanks

Aspergillus niger feeds by releasing enzymes into the external environment.

These are referred to as

Multiple Choice

A fungus that feeds on dead and decaying material is called a __________?

• death eater

• saprotroph

• heterotroph

• detritivore

Fungal habitats and uses

​How much do you know?

Do you know names examples of species which live in different habitats?

Can you give examples of beneficial and detrimental fungi?

Some text here about the topic of discussion

Multiple Choice

Whic type can be found on room surfaces

• Water moulds

• Candida albicans

• Penicillium

Multiple Choice

What is the correct term for an oral or vaginal thrush infection?

• Giardiasis

• Trypanosomiasis

• Candidiasis

• Tinea

Multiple Choice

Mycorrhizal fungi are detrimental to the growth of plants, true or false?

• True

• False

Open Ended

Give any example of a beneficial use of fungi in food production or medicine.

(Give the species name if you can.

Multiple Choice

Which of these foods is made using fungi?

• bread

• blue cheese

• beer

• wine

• All of these

Fill in the Blanks

Algae such as chlorella and scenedesmus are useful as model organisms to study

Multiple Choice

Algae are also useful in the fight against climate change as they can ...

• Absorb CO₂ from the atmosphere

• Be used in the production of biofuel

• both of these

Multiple Choice

Which protozoan structure move with oar like strokes?

• flagella

• cilia

• pseudopodia

• Pili

Multiple Choice

Which viral structure provides a means of attachment to a host cell?

• Nucleic acid

• Capsid

• Spike protein

• Integrase enzyme

Fill in the Blanks

Name one type of viral reproduction cycle

(there are two to choose from, both begin with L)

Multiple Choice

Viruses are used in the production of vaccines, True or false?

• True

• False

Multiple Choice

What type of subviral particle is made entirely of protein

(with no genetic material)

• prion

• satellite virus

• Viroid

Multiple Choice

Viroids are

• Circular DNA with a capsid

• Single stranded Circular RNA with no capsid

• Linear DNA

  with a capsid

• Double stranded RNA with a capsid