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Bio > biological molecules B3 > Flashcards

biological molecules B3 Flashcards

1
Q

substances forming starch

A

Carbon, Hydrogen, Oxygen

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2
Q

substance forming lipids (fat)

A

Carbon, Hydrogen, Oxygen

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3
Q

substance forming protein

A

Carbon, Hydrogen, Oxygen, Nitrogen

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4
Q

starch is broken down to

A

simple sugars

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5
Q

usage of lipids (fat)

A

making cell membranes, insulation, energy store

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6
Q

usage of carbohydrates (starch)

A

respiration, producing energy

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7
Q

starch is stored in the form of

A

glycogen

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8
Q

lipids are broken into

A

glycerol, fatty acids

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9
Q

use of protein

A

growth and repair

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10
Q

proteins are broken into

A

amino acids

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11
Q

test for starch

A

adding iodine

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12
Q

reaction from food that contains starch when tested for starch

A

turns blue/black

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13
Q

reaction from food that doesn’t contains starch when tested for starch

A

remains yellow/brown

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14
Q

test for glucose (sugar)

A

add Benedict’s solution and heat in 80 degrees

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15
Q

reaction from food that contains glucose when tested for glucose

A

turns green > orange > brick red depending on the amount contained

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16
Q

reaction from food that doesn’t contains glucose when tested for glucose

A

remains blue

17
Q

test for protein

A

add Biuret solution

18
Q

reaction from food that contains protein when tested for protein

A

turns lilac/purple

19
Q

reaction from food that doesn’t contains protein when tested for protein

A

remains blue

20
Q

test for lipids (fat)

A

add ethanol and water, and shake

21
Q

reaction from food that contains lipid when tested for lipids

A

cloudy emulsion is formed

22
Q

reaction from food that doesn’t contains lipid when tested for lipids

A

no cloudy emulsion remains transparent

23
Q

role of water in organism

A

good solvent, makes it easy to transport substances around organism

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