Chapter 3- Food And Biomolecules Flashcards Preview

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Flashcards in Chapter 3- Food And Biomolecules Deck (18):
1

What are functions for food?

Energy
Grow and repair
Control chemical reactions

2

What are the major molecules found in food?

Carbohydrates,Lipids,
Proteins,Vitamins (organic)
Minerals (inorganic)

3

Elements of carbohydrates?

Carbon, C
Hydrogen, H
Oxygen, O

4

Structure of carbohydrates?

Monosaccharides- single sugar molecules (glucose)
Disaccharides- Double sugar molecules (sucrose)
Polysaccharides- many sugar units (glycogen)

5

Sources of carbohydrates?

Monosaccharides- fruit (glucose)
Disaccharides- Sugar (sucrose)
Polysaccharides- Bread (glycogen)

6

Structural role of carbohydrates?

Chitin forms skeleton of insects

7

Metabolic role of carbohydrates?

Starch is a storage carbohydrate (glucose in plants)
Glycogen stores carbohydrates in animals

8

Structure of lipids?

Glycerol and 3 fatty acids- triglyceride
Glycerol and 2 fatty acids and a phosphate- phospholipid

9

Structural role of lipids?

Glucose is an immediate source of energy

10

Metabolic role of lipids

Lipids release energy when broken down in respiration

11

Structure of Protein

Amino acids connected by a peptide bond
Eg. Nitrogen

12

Sources of protein

Lean meat
Fish

13

Structural role of protein

Found as keratin in hair

14

Metabolic role of protein

Enzymes are made of protein

15

Source of vitamin C

Fruit

16

Deficiency of vitamin C

Scurvy

17

Source of vitamin D

Dairy products
Sunlight

18

Deficiency of vitamin D

Rockets in children