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AQA Biology GCSE > B5 - Communicable Diseases > Flashcards

B5 - Communicable Diseases Flashcards

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1
Q

What is a fever?

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A

A disease symptom linked to a rasied body temperature, due to disruption of the normal homeostasis mechanisms in the body

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2
Q

What is HIV?

What is the Human Immunodeficiency Virus? 🤔

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A

A virus that uses the body’s immune cells as host cells to replicate

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3
Q

What does HIV cause, if not treated appropriately?

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A

AIDS

Other: Acquired Immunodeficiency Syndrome

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4
Q

What is AIDS?

What is the Acquired Immunodeficiency Syndrome?

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A

A condition in which the body’s immune system is seriously weakened, due to infection by the HIV virus

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5
Q

What is salmonella?

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A

A genus of bacteria that can cause food poisoning

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6
Q

What is discharge?

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A

A substance that is being produced by the body that should not be there; otherwise indicating a sign of disease

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7
Q

What is a culture?

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A

A population of microorganisms that has been deliberately grown to study

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8
Q

What is binary fission?

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A

A method through which bacteria multiply; one bacterial cell divides into two, forming two identical cells

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9
Q

What is contamination?

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A

The term used to decribe when unwanted bacteria [or other microorganisms] mix in with the bacteria that you are trying to grow

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10
Q

What is a culture medium?

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A

A substance on which microorganisms are grown upon, which provides them essential nutrients for it to be able to grow

E.g. Agar gel or nutrient broth

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11
Q

What is an inoculating loop?

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A

A piece of equipment that is used to transfer microorganisms to a culture medium for growth and study

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12
Q

What is an agar plate?

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A

A Petri dish that is filled with agar gel

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13
Q

What is a colony?

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A

A population of bacteria

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14
Q

What do colonies look like?

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A

Circles of growth in an agar plate

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15
Q

What is a lawn culture?

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A

An agar plate that is spread evenly with bacteria

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16
Q

What are lawn cultures useful for?

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A

Testing antiseptics and antibiotics

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17
Q

What is mean division time?

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A

The average time that it takes for a type of bacteria to divide once, whilst put under certain conditions

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18
Q

What is measles caused by?

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A

A virus that is spread by a droplet infection

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19
Q

How is HIV spread?

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A

Through the exhange of bodily fluids

Other: Through sexual contact; through sharing of needles by drug users

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20
Q

What can be used to treat HIV to stop it from developing into AIDS?

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A

Antiretroviral drugs

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21
Q

What does the Tobacco Mosaic Virus affect?

Hint: Animals or Plants

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A

Plants

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22
Q

What does the Tobacco Mosaic Virus do to plants?

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A

It causes discolouration of the leaves, and stunts the plant’s growth

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23
Q

Why would a plant affected with TMV have a stunted growth?

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A

As discolouration of the leaves [that is caused by TMV] hinders photosynthesis

Other: Less chlorophyll in the leaves

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24
Q

What type of pathogen is the Rosa Black Spot?

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A

Fungi

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25
Q

What does the Rose Black Spot affect?

Hint: Animals or Plants

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A

Plants

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26
Q

What does the Rose Black Spot do to plants?

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A

It causes purple or black spots to form on the leaves; the whole leaf turns yellow and begins to drop early; it also stunts the plant’s growth

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27
Q

How is the Rose Black Spot fungus spread?

How is this fungus transmitted? 🤔

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A

Through wind or water

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28
Q

What are the treatment options for removing the Rose Black Spot fungus off plants?

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A

Remove the affected leaves or use a fungicide

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AQA Biology GCSE (18 decks)

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