Microbes Flashcards

1
Q

how can we see microbes

A

by using a microscope

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2
Q

what are the main types of microbes

A

viruses, bacteria and fungi

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3
Q

what is the most common fungus microbe

A

yeast

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4
Q

what the biggest microbe

A

yeast

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5
Q

what is the smallest microbe

A

viruses

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6
Q

what is the middle size microbe

A

bacteria

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7
Q

why are viruses not considered a living thing

A

because they cant carry out any of the seven life processes for themselves

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8
Q

what microbes are useful when making food and drink

A

bacteria and yeast

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9
Q

what are yeasts used for in cooking

A

to make bread rise

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10
Q

how does yeast make bread rise

A

the cells use oxygen, from the air found in pockets in the dough, for aerobic respiration. this process uses carbon dioxide that makes the bread rise

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11
Q

formula for aerobic respiration

A

glucose + oxygen - carbon dioxide + water

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12
Q

what are yeast used for when making drinks

A

for making beer and wine

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13
Q

how does yeast make beer and wine

A

in this case there is no air and so the yeast cells use anaerobic respiration.

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14
Q

what is fermentation

A

when yeast cells use anaerobic respiration

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15
Q

what is the waste product of anaerobic respiration in yeast

A

ethanol

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16
Q

formula for anaerobic respiration in yeast

A

glucose - carbon dioxide + ethanol

17
Q

formula for anaerobic respiration in humans

A

glucose - lactic acid

18
Q

what is the population

A

the number of organisms in an area

19
Q

when will yeast cells grow rapidly

A

in good conditions. warm, moist, plenty of sugar

20
Q

when will the population stop growing

A

if something runs out (eg. sugar )

21
Q

what is a limiting factor

A

the thing that stops the population growing