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biology GCSE > Respiration > Flashcards

Respiration Flashcards

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1
Q

Purpose

A

To produce energy in the form of ATP from larger molecules (like sugars)

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2
Q

What type of reaction is respiration

A

Exothermic, because it releases energy into the surroundings

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3
Q

When does aerobic respiration take place?

A

When there is oxygen available

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4
Q

Word equation

A

Glucose + Oxygen → Carbon dioxide + Water (+ energy)

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5
Q

Symbol equation

A

C6H12O6 + 602 —> 6CO2+6H2O+(energy)

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6
Q

Anaerobic respiration takes place when

A

When there is little to no oxygen available

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7
Q

Anaerobic respiration

A

Glucose —> lactic acid + co2 (in animals )

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8
Q

Anaerobic respiration in yeast

A

Glucose —> Ethanol + co2

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9
Q

What type produces more ATP

A

Aerobic (19x more)

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10
Q

What is oxygen debt

A

The extra oxygen that is needed to break down the lactic acid formed in anaerobic respiration

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11
Q

What type of molecules are carbohydrates and proteins?

A

Polymers

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12
Q

What are the monomers that make up proteins?

A

Amino acids

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13
Q

What enzymes break down carbs

A

Carbohydrase

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14
Q

What enzymes break down proteins

A

Protease

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15
Q

What enzymes break down lipids

A

Lipase, produce fatty acids and glycerol

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16
Q

What breaks down carbs to form simple sugars

A

Amylase

17
Q

Where is amylase made

A
  • small intestines
  • pancreas
18
Q

Test for starch

A

Iodine
The solution starts off orange, and if starch is present it gives blue black

19
Q

Test for sugars

A

Benedict’s
Goes from blue solution to greenish yellow

20
Q

Test for protein

A

Biurets
Goes from blur to lilac/purple

21
Q

Test for lipids

A

Ethanol
A white precipitate means reaction has taken place

Sugar paper
Paper remains translucent if lipids are present

22
Q

How do you test for starch

A

Mash up substance, add two to thee drops of iodine solution

biology GCSE (9 decks)

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