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Bioligy > B3 - Digestion and enzymes > Flashcards

B3 - Digestion and enzymes Flashcards

1
Q

what is the name of the enzyme that breaks down protein?

A

protease

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2
Q

what is the name of the enzyme that breaks down lipids?

A

lipaese

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3
Q

what is the name of the enzyme that breaks down carbs?

A

carbohydrase

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4
Q

what are carbs broken down into?

A

sugars

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5
Q

what is protein broken down into?

A

amino acids

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6
Q

what are fats broken down into?

A

fatty acids and glycerol.

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7
Q

what enzyme is found in the stomach

A

pepsin

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8
Q

what does the enzyme pepsin break down?

A

protein

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9
Q

what enzyme is found in the mouth?

A

amylase

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10
Q

what does amylase break down?

A

starch

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11
Q

where is amylase produced?

A

In the salivary glands and in the pancreas

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12
Q

what is the job of bile?

A

bile emulsifies fat making it easier for enzymes to break it down and neutralises the PH for enzymes to work in

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13
Q

where is bile produced?

A

in the liver

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14
Q

where is bile stored?

A

In the gall bladder

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15
Q

why is diffusion so effective in the small intestines?

A

there are villi which have:

  • large surface area
  • a very good blood supply
  • a short diffusion path
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16
Q

what is the job of the large intestine?

A

to push the waste through the body and squeeze out any water

17
Q

where are faeces stored and then released?

A

stored in the rectum

released through the anus

18
Q

what is an enzyme?

A

a biological catalyst that speeds up digestion

19
Q

what is the test for sugars?

A

add Benedict’s solution to the food, if it goes red, high concentration of sugar, if it goes green/orange, low concentration of sugars, if it STAYS BLUE, the food has no sugar in it.

20
Q

what is the test for starch?

A

add iodine to the food, if the iodine turns black/purple, then it contains starch, if it STAYS ORANGE then the food has no starch.

21
Q

what is the test for lipids?

A

1- add ethanol too solution of food, if it goes cloudy then it contains fats,
2- rub sample of food onto grease proof paper, if the paper becomes translucent the food contains fats.

22
Q

what is the test for protein?

A

add Beirut solution to food, if it goes pink/purple the food has protein in it, if the solution STAYS BLUE then the food contains no protein.

23
Q

what PH level does amylase work best in?

A

PH8 - alkali

Bioligy (3 decks)

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