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biological molecules Flashcards

1
Q

what is the in carbohydrates

A

carbon, hydrogen , oxygen

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1
Q

what are proteins made of

A

carbon, hydrogen, oxygen, nitrogen

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2
Q

what are lipids made of

A

cardon, oxygen, hydrogen

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3
Q

what are the different types of size of carbs

A

1 = glucose
2 = maltose
2< = starch or glycogen

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4
Q

what is the basic unit of proteins

A

amino acids

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5
Q

what happens when amino acids join together

A

a protein is formed

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6
Q

what is the different types of size of proteins

A

amino acids
peptide
protein

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7
Q

what are lipids made of

A

1 glycerol and 3 fatty acid chains

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8
Q

what are the two types of lipids

A

fats (room temp solid)
oils (room temp liquid)

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9
Q

how do you test for glucose

A

add benedict’s to solution to be tested
put in water bath
yellow if low
red for high

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10
Q

how do you test for starch

A

add iodine solution
substance turns blue-black

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11
Q

how do you test for protein

A

use biuret solution
positive turns purple

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12
Q

how do you test for lipids

A

add sample with 2cm of ethanol
the same amount of water is added
positive it will turn cloudy

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13
Q

what are enzymes

A

they are proteins
they are biological catalysts
they are specific to one particular substrate

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14
Q

how is the production of enzymes changed

A

temperature
pH

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15
Q

where are the reaction taking place

A

active site

16
Q

what happens to an enzyme if it gets to hot

A

it will denature

17
Q

what is the optimum temperature of enzymes in the body

A

37c

18
Q

practical on effect of temperature

A

starch solution is heat to set temp
iodine is added to wells
amylase is added to the starch
this is continued till iodine stops turning blue-black
time taken for the reaction to be completed is recorded
the quicker the reaction is completed the aster the enzyme is working

19
Q

affect of pH/temp on enzymes

A

this will change the shape of the active site so it is no longer complimentor to

20
Q
A

Bio (9 decks)

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