Get premium membership and access questions with answers, video lessons as well as revision papers.
Koch's postulates state:
The microorganism causing disease must be abundantly present in organisms suffering from that disease but absent in all healthy organisms.
The microorganism must be isolated and grown in a pure culture.
The microorganism must then be innoculated into a healthy disease free experimental organism and the organism should show similar symptoms of the disease to the original host.
The microorganism must then be re-isolated from the experimental organism and identified as identical to the causative agent in the initial sick organism.
Dennis Ruciu answered the question on April 6, 2018 at 05:59
- What are the two most important components of a virus?(Solved)
What are the two most important components of a virus?
Date posted: April 6, 2018. Answers (1)
- Name six groups of viruses under the Baltimore classification system.(Solved)
Name six groups of viruses under the Baltimore classification system.
Date posted: April 6, 2018. Answers (1)
- Where are resistant genes located in bacterial cells?(Solved)
Where are resistant genes located in bacterial cells?
Date posted: April 6, 2018. Answers (1)
- What name is given to the protein shell that encloses a virus?(Solved)
What name is given to the protein shell that encloses a virus?
Date posted: April 6, 2018. Answers (1)
- List three physical methods of controlling microbes (Solved)
List three physical methods of controlling microbes.
Date posted: April 6, 2018. Answers (1)
- Define microbial generation time(Solved)
Define microbial generation time.
Date posted: April 6, 2018. Answers (1)
- Name blood vessel that transport blood from small intestine to the lungs(Solved)
Name blood vessel that transport blood from small intestine to the lungs.
Date posted: April 5, 2018. Answers (1)
- State the four types of plasmodium.(Solved)
State the four types of plasmodium.
Date posted: April 5, 2018. Answers (1)
- State the three stages of a plasmodium lifecycle.(Solved)
State the three stages of a plasmodium lifecycle.
Date posted: April 5, 2018. Answers (1)
- State at least five issues which should form the scope of the EIA study(Solved)
State at least five issues which should form the scope of the EIA study.
Date posted: April 5, 2018. Answers (1)
- Give the reason for staining specimens for observation under a microscope(Solved)
Give the reason for staining specimens for observation under a microscope.
Date posted: April 5, 2018. Answers (1)
- Discuss membrane as a component of the cell under the following subheadings;
a)Membrane fluidity.(minimum five statements)
b)Membrane asymmetry.(Minimum two statements)(Solved)
Discuss membrane as a component of the cell under the following subheadings;
a)Membrane fluidity.(minimum five statements)
b)Membrane asymmetry.(Minimum two statements)
Date posted: April 4, 2018. Answers (1)
- State four main functional roles of membranes.(Solved)
State four main functional roles of membranes.
Date posted: April 4, 2018. Answers (1)
- What is the gestation period of a healthy monkey in days.(Solved)
What is the gestation period of a healthy monkey in days.
Date posted: April 3, 2018. Answers (1)
- Tabulate differences between lungs and gills(Solved)
Tabulate differences between lungs and gills
Date posted: April 3, 2018. Answers (1)
- What is the significance of the larval stage in a complete metamorphosis?(Solved)
What is the significance of the larval stage in a complete metamorphosis?
Date posted: April 1, 2018. Answers (1)
- What is metamorphosis?(Solved)
What is metamorphosis?
Date posted: April 1, 2018. Answers (1)
- What is the difference between growth and differentiation?(Solved)
What is the difference between growth and differentiation?
Date posted: April 1, 2018. Answers (1)
- Define the term development(Solved)
Define the term development.
Date posted: April 1, 2018. Answers (1)
- Describe the role of hormones in secondary sexual characteristics in Boys(Solved)
The hormones involved in secondary growth of boys and their roles
Date posted: April 1, 2018. Answers (1)