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Biology > B3 > Flashcards

B3 Flashcards

1
Q

What is a tissue

A

A group of cells with a similar structure and function

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2
Q

Give 2 examples of tissues

A

Muscular
Glandular

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3
Q

What does the digestive system include

A

Glands
Stomach
Liver
Small intestine
Large intestine

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4
Q

What are villi

A

Absorb soluble food efficiently in the small intestine

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5
Q

What are the 3 components of food

A

Carbohydrates
Lipids
Proteins

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6
Q

What are all carbohydrates made of

A

Units of sugar

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7
Q

Give an example of a complex carb

A

Starch

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8
Q

What are lipids

A

Three molecules of fatty acids linked to a glycerol molecule

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9
Q

What are proteins made of

A

Long chains of amino acids

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10
Q

What type of catalysts are enzymes

A

Biological catalysts

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11
Q

What is a substrate

A

A substance in which an enzyme can act

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12
Q

Give 2 factors affecting enzyme action

A

Temperature
pH

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13
Q

What happens if the temperature is too high

A

Enzyme becomes denatured

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14
Q

What does denatured mean

A

Active site changes shape

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15
Q

What pH do enzymes in the stomach work best at

A

Acidic

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16
Q

How does pH affect enzymes

A

A change in pH affects forces on the enzyme which changes the shape of it

17
Q

Where are digestive cells produced

A

Glands and small intestine

18
Q

What food does amylase break down

A

Carbs

19
Q

Where is amylase produced

A

Salivary glands
Pancreas
Small intestine

20
Q

What does protease break down

A

Proteins

21
Q

Where is protease produced

A

Stomach
Pancreas
Small intestine

22
Q

What does lipase break down

A

Lipids into glycerol

23
Q

What is bile

A

Released by liver to neutralise food leaving stomach and emulsify fat

24
Q

What are the 3 tissues found In the stomach

A

Muscular
Glandular
Epithelial

25
Q

What is epithelial tissue used for

A

Line inside and outside of stomach

Biology (15 decks)

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