COMMUNICABLE DISEASES Flashcards
What is agar gel?
Widely used solid (gel) culture medium used for growing microorganisms.
What are aphids?
Insects that penetrate the plant phloem and feed on the dissolved food. They act as plant pathogens and are also vectors that carry pathogenic viruses, bacteria, and fungi into healthy plant tissues.
What is binary fission?
Reproduction by simple cell division, for example in bacteria.
What is chlorosis?
the yellowing seen on the leaves of plants when they cannot make chlorophyll due to the lack of magnesium ions.
What are communicable diseases?
Disease caused by pathogens that can be passed from one organism to the other.
What is a culture medium?
A liquid or gel used to support the growth of microorganisms or other cultures, often containing specific nutrients.
What does inoculate mean?
Introducing microorganisms to a culture medium, or introducing modified microorganisms into an individual to protect them against disease.
What are microorganisms?
Organisms that are usually single-celled and can only be seen using a microscope. They include bacteria, fungi, viruses and protists.
What is mutation?
A change in the genetic material of an organism.
What are non-communicable diseases?
They are not infectious and cannot be passed from one organism to another.
What are pathogens?
Microorganisms that cause disease.
What are STDs?
Transmitted from an infected person to an uninfected person by unprotected sexual contact.
What are vaccines?
Dead or inactive pathogenic material used in vaccination to develop immunity to a disease in a healthy person.
What is a virus?
Pathogens that are much smaller than bacteria and can only reproduce inside living cells of other organisms.
