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The body at war > revision questions > Flashcards

revision questions Flashcards

1
Q

what causes the influenza

A

a virus

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2
Q

why is the flu so easy to catch

A

it’s transmitted easily-through coughing, sneezing and breathing

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3
Q

why does sneezing spread the flu

A

a sneeze spreads tiny droplets containing microbes into the air

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4
Q

what kind of microbes cause the following diseases
athletes foot
chicken pox
measles
malaria
salmonella poisoning
tuberculosis
AIDS

A

athletes foot-fungus
chicken pox-virus
measles-virus
malaria-parasite
salmonella poisoning-bacterium
tuberculosis-bacterium
AIDS-virus

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5
Q

antiseptic

A

a substance that stops the growth of disease causing organisms in wounds

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6
Q

sterile

A

something that has no viruses, bacteria or other organisms on it

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7
Q

disinfectant

A

something that kills disease-forming organism eg. heat and sunlight

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8
Q

similarties between viruses and bacteria

A

spread in similar ways(droplets, contact and vectors)
vaccines

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9
Q

how do white blood cells fight disease

A

produce antibodies

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10
Q

Viruses are able to mutate and change the shape of their antigens. Explain the significance of this.

A

To help it reproduce quicker and adhere to the surface of cells

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11
Q

platelets

A

form blood clots and prevent bleeding

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12
Q

importance of inflammation when fighting an infection.

A

enables our bodies to fight off bacteria, viruses and other toxins

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13
Q

when your body is invaded by a virus what happens

A

lymphocytes produce antibodies

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14
Q

the injection into the body of some dead or weakened pathogens

A

immunisation

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15
Q

immunisation os the injection of what kind of pathogens

A

dead or weakened

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16
Q

what occurs at intervals along lymph blood vessels

A

lymphe nodes

17
Q

from the graph in the worksheet what happens at point A B C and D

A

A-pathogen enters the body
B-microbes mutiply fast
c-microbes being destroyed
d-all microbes are dead and the person regains health

18
Q

how do vaccines work

A

Vaccines contain weakened or inactive parts of an antigen that triggers an immune response within the body

19
Q

difference betwen phagocytes and lympohcytes

A

phagocytes are non speifci, lymphoyctes specifci

20
Q

independent variable

A

variable that does not change

21
Q

dependent variable

A

variable being tested

22
Q

relationship between pathogens, phagocytes and phaogcystosis using flowchart

A

pathogen>is destroyed by>phagocyte>part of phagocytosis

23
Q

how do prions replicate

A

prions infect a cell
turn normal proteins into prions
cells burst and spread the prions to new cell

23
Q

relationship between antigens, pathogens, antibodies, lymphocytes and phagocytes

A

pathogen contains antigens that stimulate lymphocytes’ production of antibodies which stimulate phagocytes

24
Q

relationship between lymph(fluid made of white cells), lymphocytes, lymph vessels and the lymphatic system

A

The lymphatic system consists of lymph vessels which consist of lymph which consist of lymphocytes

25
Q

Active immunity

A

occurs when our own immune system is responsible for protecting us from a pathogen.

26
Q

passive immunity

A

occurs when we are protected from a pathogen by immunity gained from someone else

27
Q

Natural passive immunity

A

a person receives antibodies from an external source

28
Q

artificle passive immunity

A

antibodies are injected into the patient.

29
Q

Natural active immunity

A

antibodies are made after exposure to an antigen

30
Q

artificial active immunity

A

occurs when antibodies are produced in the body after exposure to a killed or weakened pathogen

31
Q

antigen antibody complex

A

molecule formed from the binding of multiple antigens to antibodies.

The body at war (13 decks)

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