mod 7

Question 1

prions

Answer 1

non-cellular, no protein coat, induces abnormal protines which attack brain or nerve cells. eg mad cow disease, curu

Question 2

virus

Answer 2

non-cellular, DNA/RNA/protein, needs a host to survive, nucleaic acid= replication influenza/corona

Question 3

bacteria

Answer 3

unicellular, prokaryote, rapid division, physical (invading cells), chemical (spreading toxins) eg, TB, e.coli

Question 4

protazoa

Answer 4

prokaryote, many hosts in a lifetime eg. malaria

Question 5

fungi

Answer 5

prokaryoute, uni/multicellular, yeats, moulds thrush

Question 6

macro parasites

Answer 6

outside the body, DNA, anthropods/words eg. tapeworm dirrorhoa

Question 7

epidemic

Answer 7

the widespread occurrence of an infectious disease in a community at a particular time, above what is normally expected in the population at that time

Question 8

pandemic

Answer 8

is an epidemic that has spread over several countries or continents, usually affecting a large number of people

Question 9

direct

Answer 9

person to person, direct droplet, pregnant lady to baby. eg, chicken pox/ HIV/AIDS

Question 10

indirect

Answer 10

airborne, environmental water/soil, food/water eg. cold/flu,

Question 11

vector

Answer 11

mechanical transmission (involves animal carrying a pathogen from one host to another without being infect itself)

Question 12

koch

Answer 12

1. identify, present, control
2. isolated, pure culture
3. pure cuture injected
4. innoculated, same

Question 13

panama disease in banana

Answer 13

soil bourne, fungal diseases, ristiant to fungicide and cant be controlled chemically. damage to banana tissue in plants, starve and die. mointoring and quarnteen

Question 14

footrot

Answer 14

dicelbactor nodosus, footrot in sheep, horse. impacts wool production, revenue farmers down, costs to manage down.

Question 15

pathgognes must…

Answer 15

1. enter the host
2. multiply in the hosts tissues
3. resist the hosts defence mechanisms
4. damage the host

Question 16

bubonic plague

Answer 16

bacteria (yersinia pestis),
vecotr of flea
production of biofilm helps bacteria spread in regurgitation in next feeding

Question 17

SARS (severe accute respatoriy syndrome(

Answer 17

SARS-associated coronavirus
envelope protein-> virus’ life cycle. assembly, budding, evelope, formation, pathgenisis
spike protein -> facilitates attachment between virus and host cell receptors and fusion between membranes al