Fichas
MICRO-ORGANISMS
Fichas del conjunto (33)
- 1NAME 4 DIFFERENT TYPES OF MICRO-ORGANISMS.-viruses
-bacteria
-protists
-fungi - 2WHICH IS THE SMALLEST MIRCO-ORGANISM?virus
- 3WHAT ARE THE CLASSIFICATIONS FOR EACH MICRO-ORGANISM?-virus: not classified
-bacteria: monera
-protist: protoctista
-fungi: fungi - 4DO VIRUSES HAVE A NUCLEUS?No, they are acellular meaning they have no nucleus, cytoplasm or organelles.
- 5WHAT DOES THE STRUCTURE OF A VIRUS LOOK LIKE THEN?It has nucleic acid containing RNA & DNA, which is surrounded by a protein coat called capsid.
- 6WHAT ARE THE 2 PHASES THAT VIRUSES EXIST IN?-inactive: they are outside of the host cell, can't grow or reproduce and no metabolic activities can take place.
active: they are in contact with a host cell, they inject their genetic material into the host cell and take over the functions, viral DNA interferes with the metabolism of the host cell, uses it to make more of the virus - 7WHAT DISEASE DO VIRUSES CAUSE IN PLANTS?Tobacco Mosaic Virus (TMV)
- in tobacco &peppers
-it stunts its growth and reduces the quality and quantity; doesn't outright kill it
-damages the leaves, flowers and fruit; become discoloured and distorted - 8WHAT 3 DISEASES CAN VIRUSES CAUSE IN HUMANS?-colds
-measels
-chicken pox
-RABIES - 9HOW DOES ONE GET INFECTED BY RABIES?You get infected via a bite, as rabies is found in the saliva and can infect you in an open wound.
- 10HOW DOES RABIES SPREAD IN HUMANS?- It replicates at muscle/other cells at infection site.
-It reproduces and spreads to the salivary glands.
-It then travels up the nerve cells to the brain.
-Usually die within 3-5 days of infection. - 11WHAT ARE THE EARLY SYMPTOMS OF RABIES?-fever
-headache
-sore muscles - 12AS THE PROGRESSION OCCURS WHAT DO THE SYMPTOMS LOOK LIKE?-agitation & confusion
-seizures
-excessive saliva - 13WHAT IS THE TREATMENT FOR RABIES?An injection of immuno-globulin and a vaccine.
- 14WHAT DOES THE IMMUNO-GLOBULIN CONTAIN?It contains anti-bodies to attack the virus and stop it from travelling to the brain.
- 15DO BACTERIA HAVE A NUCLEUS?No they are prokaryotic meaning they have no true nucleus
simply a single strand of DNA floating in the nucleoid - 16WHAT IS THE BACTERIA CELL WALL MADE OUT OF?Peptidoglycan, which is a polysaccharide.
- 17D: HAIR LIKE STRUCTURES THAT CAN OCCUR?Pili
- 18D: THEY REPRODUCE ASEXUALLY...?Binary Fission
- 19BACTERIA ARE NAMED ACCORDING TO THEIR SHAPE. WHAT ARE EACH OF THEM ARE THIER SHAPE?-Coccus: sphere
-Bacillus: rod
-Vibrio: comma shape
-Sprilli: worm - 20DISEASES CAUSED BY BACTERIA?- CHOLERA( vibrio cholera)
-TB (mycobacterium tuberculosis)
-syphilis - 21HOW IS CHOLERA SPREAD?-It is spread through water contaminated with human feces
-Also found in costal waters when people eat raw shellfish - 22EFFECTS?-the bacterium settles in the lining of the small intestine
-causes watery diarrhoea; nausea; vomiting - 23WHAT DOES THE MANAGEMENT ENTAIL?-prevent dehydration
-be cautious in areas of risk
boil water
keep flies away from food
cook food well etc. - 24EFFECTS OF TB?-Usually attacks the lungs
-Can be dormant for years
-Results in: persistent cough, coughing up blood, night sweats etc. - 25PROTISTS CAN BE DIVIDED INTO 2 MAIN GROUPS...?-Protozoa
-Algae - 26WHAT ARE THE 4 DIFFERENT TYPES OF PROTOZOA? ELABORATE ON THEM.-Amoebas
-Cilliates
-Flagellates
-Sporozoans - 27ALGAE ARE GROUPED BASED ON COLOUR. WHAT ARE THOSE GROUPINGS?-Chlorophyta: green
-Rhodophyta: red
-Phaeophyta: brown - 28EXAMPLES OF UNICELLULAR ALGAE?-dinoflagellates
-diotoms - 29WHAT ARE DISEASES CAUSED BY PROTISTS?-Sleeping sickness
-Malaria - 30WHAT SPECIFIC PROTIST TYPE CAUSES MALARIA AND HOW IS IT SPREAD?Plasmodium Sporozoan causes malaria and it is carried in the female anopheles mosquito.
- 31LIFE CYCLE?7 (NOTES)
- 32SOME SYMPTOMS OF MALARIA?-Shivering due to the burst of red blood cells; also anaemia
-Juandice due to liver damage
-Convulsions
Blockage of blood vessels to major organs - 33MANAGEMENT ?-Prophylactic medication
-Avoid mosquitos
-Nets
Información
- Descripción
- caps LIFE SCIENCES Fichas sobre MICRO-ORGANISMS, creado por Arabella Fernandes el 16/05/2024.
- Creado por
- Arabella Fernandes
- Visitas
- 5
- Etiquetas
- Valoración