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Biology > Human Nutrition 2 > Flashcards

Human Nutrition 2 Flashcards

1
Q

What is a biological molecule?

A

Organisms are made up of it

all cells are built using the same basic molecules.

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2
Q

What is H20 in terms of a molecule?

A

The most abundant molecule in living cells

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3
Q

What are the four main biological molecules?

A

Proteins, carbohydrates, lipids, nucleic acids

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4
Q

What do proteins and carbohydrates have in common?

A

They are both polymers

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5
Q

What are the monomers that polymers are made up of?

A

Amino acids
Monosaccharides
Nucleotides

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6
Q

Give examples of proteins and carbohydrates:

A

Meat
Fish
Eggs
Dairy
Nuts

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7
Q

What are the components of a lipid?

A

Glycerol and three fatty acids

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8
Q

What is the main function of a lipid?

A

insulation

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9
Q

What is the main function of a carbohydrate?

A

Energy

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10
Q

What is the main function of a protein?

A

Growth and repair

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11
Q

What elements are proteins made of?

A

C, H, O, N, sometimes S

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12
Q

What elements are carbohydrates and lipids both made up of?

A

C, H,O

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13
Q

What is the test for glucose?

A

heat with benedicts solution and if it turns from transparent blue to brick red you have a positive result

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14
Q

What is the test for starch?

A

Add iodine to a dimple tray, if it turns from orange to blue/black then its a positive result

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15
Q

What is the test for protein?

A

Add biuret reagent to a dimple tray and if it turns form transparent blue to lilac then it’s a positive test

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16
Q

What is the test for lipids (fats)

A

Add ethanol and water to a test tube along witha fatty food and shake until it turns form clear to cloudy white

17
Q

How can we see what nutrient foods contain?

A

Using specific biochemical tests

18
Q

What is a polymer?

A

Long chain of repeating monomers

19
Q

What are the functions for:
-Glucose
-Cellulose
-Glycogen
-Starch

A

Glucose = short term energy
Cellulose = forms plant cell wall
Glycogen = energy store in muscles
Starch = gives you energy

20
Q

What are the five groups of proteins?

A

Carriers
Defenders
Enzymes
Hormones
Structural

Biology (10 decks)

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