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WorksheetsFrom Molecules to Ecosystems - Module 3 Global Health
Total questions: 23
Worksheet time: 12mins
Which statement best describes the current situation with tuberculosis?
This is an animal disease that does not usually cause problems for humans
This is a very problematic disease that is often resistant to antimicrobials
This is a new disease that is spread by contaminated water supplies
This is a common disease, but the symptoms are mild, and it is readily treated
What does ‘normal flora’ mean?
Microbes that are found only in one location
Microbes that do not cause disease
Microbes that are found on flowers
Microbes that are commonly associated with the human body
What is an important component of the “One Health” philosophy?
That human health is more important than animal or plant health
That humans need to get sick sometimes to allow plants and animals to thrive
That antibacterial compounds need to be used more widely to maintain health
That the health of the environment directly impacts on human health
What are the key features of bacteria?
Single-celled, prokaryotic, peptidoglycan cell wall
Unicellular or multicellular, eukaryotic, can have cell walls
Uses hosts to replicate, hijacks living cells, can have DNA/RNA
Unicellular or multicellular, eukaryotic, macroscopic or microscopic, chitin cell wall
Single-celled, prokaryotic, exist in harsh environments
What are the key features of protists?
Single-celled, prokaryotic, peptidoglycan cell wall
Unicellular or multicellular, eukaryotic, can have cell walls
Uses hosts to replicate, hijacks living cells, can have DNA/RNA
Unicellular or multicellular, eukaryotic, macroscopic or microscopic, chitin cell wall
Single-celled, prokaryotic, exist in harsh environments
What are the key features of viruses?
Single-celled, prokaryotic, peptidoglycan cell wall
Unicellular or multicellular, eukaryotic, can have cell walls
Uses hosts to replicate, hijacks living cells, can have DNA/RNA
Unicellular or multicellular, eukaryotic, macroscopic or microscopic, chitin cell wall
Single-celled, prokaryotic, exist in harsh environments
What are the key features of fungi?
Single-celled, prokaryotic, peptidoglycan cell wall
Unicellular or multicellular, eukaryotic, can have cell walls
Uses hosts to replicate, hijacks living cells, can have DNA/RNA
Unicellular or multicellular, eukaryotic, macroscopic or microscopic, chitin cell wall
Single-celled, prokaryotic, exist in harsh environments
What are the key features of archaea?
Single-celled, prokaryotic, peptidoglycan cell wall
Unicellular or multicellular, eukaryotic, can have cell walls
Uses hosts to replicate, hijacks living cells, can have DNA/RNA
Unicellular or multicellular, eukaryotic, macroscopic or microscopic, chitin cell wall
Single-celled, prokaryotic, exist in harsh environments
“Germ-free” cows would not be able to survive because
They would be too vulnerable to pathogens
They would not be able to digest cellulose
They would suffer from severe tooth decay
They would rapidly fill up with methane
The major reason that microbes that cause plant diseases are problematic is because
They cause massive economic damage
They reduce the fertility of soils
They contaminate the food production chain
They can transfer into animals, causing animal diseases
Microbes that are normal flora of animals are:
Also normal flora for humans
Also normal flora for plants
Sometimes pathogens of humans
Sometimes pathogens of plants
What is food-borne infection?
Caused by the microbes themselves; microbes grow in gut e.g. salmonella
· Caused by toxins released by microbes; microbes make toxins in food e.g. bacteria in starchy foods
What is food-borne intoxication?
Caused by toxins released by microbes; microbes make toxins in food e.g. bacteria in starchy foods
Caused by the microbes themselves; microbes grow in gut e.g. salmonella
The lichen symbiosis consists of which two partners?
Bacteria and fungi
Fungi and algae
Protists and plants
Plants and bacteria
Pollutant-degrading bacteria typically belong to which of the following nutritional types?
Autotrophs
Heterotrophs
Methanogens
Primary producers
Global warming is partly due to increased atmospheric levels of CO2 and CH4.
Which of the following microbes would be the most helpful in reducing global warming?
Methanotrophs
Methanogens
Decomposers
Heterotrophs
Photoautotrophic bacteria
Uses complex organic molecules as their primary carbon and energy sources
Uses CO2 as their carbon source and light as their energy source
Use light as their energy source and organic molecules as their carbon source
Use nitrate or ammonia as their energy source and organic molecules as their carbon source
What valuable resource do members of the Archaea offer for biotechnology?
They make T4 ligase enzyme
They are useful hosts for cloning and gene expression
They make many antibiotics and other bioactive compounds
They make thermostable enzymes like DNA polymerases
What are the 3 key features required by a useful plasmid vector?
Replication function, selectable marker, and cloning site
Protective protein coat, conjugation functions, and recombinant structure
Promoters, transcription signals, and translation signals
The ability to copy DNA, cut DNA, and join DNA
Which of the following is an example of a “cloning vector”?
chromosomal DNA
plasmid DNA
genomic DNA
messenger RNA
A. E.coli is widely used in recombinant DNA technology because it is generally regarded as safe (GRAS)
B. T4 DNA ligase is an enzyme produced by T4 bacteriophage
A & B are both correct
A is correct and B is incorrect
A is incorrect and B is correct
A & B are both incorrect
What are the steps involved in the production of the recombinant hepatitis B vaccine?
1. HBsAg gene
2. PCR with thermostable polymerase
3. Clone HBsAg gene into plasmid
4. Transform yeast host with plasmid
5. GMO yeast
6. HbsAb gene makes HBsAg protein
1. HBsAg gene
2. PCR with thermostable polymerase
3. Transform yeast host with plasmid
4. GMO yeast
5. Clone HBsAg gene into plasmid
6. HbsAb gene makes HBsAg protein
1. HBsAg gene
2. Clone HBsAg gene into plasmid
3. PCR with thermostable polymerase
4. Transform yeast host with plasmid
5. GMO yeast
6. HbsAb gene makes HBsAg protein
1. HBsAg gene
2. PCR with thermostable polymerase
3. Clone HBsAg gene into plasmid
4. Transform yeast host with plasmid
5.HbsAb gene makes HBsAg protein
6. GMO yeast
A) Pasteur’s experiment with the swan-necked flasks was important because it proved Koch’s postulates
B) Pasteur’s work directly led to the invention of the microscope
A & B are both correct
A is correct and B is incorrect
A is incorrect and B is correct
A & B are both incorrect
