Communicable diseases Flashcards
What is an infection
An infection is the invasion of tissues by pathogens, their multiplication, and the reaction of host tissues to the infectious agent and the toxins they produce.
Crown gall
Swelling (gall) which cuts off flow of sap leads to stunted growth can lead to eventual death (bacteria)
Root knot nematodes
Damaged roots so plant fails to grow (nematode worms)
Aphids
Damaged stem and leaves, twisted and curled leaves, stunted growth and yellowed leaves (insects)
Disinfectants
Substances used on non-living surfaces to destroy microorganisms
Aseptic technique
What is the name of the specific procedures used to prevent unwanted microorganisms from contaminating the clinical specimen?
Name the substance found in the trachea that traps dust and pathogens and stops them from entering the lungs.
Mucus
New discoveries in biology are checked anonymously by other scientific experts before the findings can be published. What two word name is given to this checking process?
Peer review
Measles, HIV and TMV are all examples of what type of communicable disease?
Viruses
What is the function of a cilia cell?
To waft the mucus to the back of the throat
What system in the body is affected by HIV/AIDS?
The immune system
What do plants make from the nitrates that they absorb?
Proteins
What name is given to an antibody that only reacts with a highly specific antigen, and has been produced using laboratory-grown lymphocytes?
Monoclonal antibodies
Which type of wbc produces antibodies and antitoxins
Lymphocytes
What does agar jelly contain that makes it an ideal growth spot for bacteria
Nutrients such as glucose
Lymphocytes are combined with a particular kind of tumour cell to make a cell called a hybridoma. IA hybrid is something made by combining two different things.)
Hybridoma
Vena cava
Left side of page right side of heart
What do valves prevent
The back flow of blood
What does the plasma transport
Water, salt and enzymes
Aorta
Right side of page left side of heart
Compare the structure of an artery and a vein
Arteries have thick walls and are narrower with muscle tissue and are stretchier. Veins have thinner walls and use valves to keep your blood flowing they are less stretchy.
How are lungs adapted for diffusion
They have many Aveoli for a Large surface area for a fast rate of diffusion and thin aveolar walls so there is a short diffusion distance
