Biological Molecules

Question 1

What are biological molecules

Answer 1

Molecules made and used by living organisms

Question 2

Examples of biological molecules

Answer 2

• carbohydrates
• lipids
• proteins
• DNA
• ATP
• Water
• Inorganic compounds

Question 3

What are the 3 functions of carbohydrates

Answer 3

• Energy source (Glucose in respiration)
• Energy store (Starch in plants, glycogen in animals)
• Structure (cellulose in cell wall of plants)

Question 4

What are the building blocks of carbohydrates called?

Answer 4

Monosaccharides

Question 5

Examples of monosaccharides

Answer 5

• Glucose (alpha and beta)
• Galactose
• fructose

Question 6

Formula for monosaccharides

Answer 6

C6 H12 O6

Question 7

Are monosaccahrides isomers? and whats an isomer

Answer 7

Yes

- same formula but different arrangements

Question 8

Difference between alpha and beta glucose?

Answer 8

On carbon 1 :
Alpha has - an OH group on the bottom
Beta has - an OH group on the top

Question 9

How are monosaccahrides joined together?

Answer 9

Condensation reaction

Question 10

Condensation reaction?

Answer 10

Removing water between 2 OH groups

Question 11

What is the bond in a carbohydrate?

Answer 11

A glycosidic bond (between carbon 1 and carbon 4)

Question 12

Disaccharides glucose + galactose =

Answer 12

lactose

Question 13

Disaccharides glucose + glucose =

Answer 13

maltose

Question 14

Disaccharides glucose + fructose =

Answer 14

sucrose

Question 15

disaccharide formula

Answer 15

C12 H22 O11`

Question 16

How are polymers separated?

Answer 16

Hydrolysis

Question 17

Whats hydrolysis?

Answer 17

adding water

Question 18

What is a polysaccharide?

Answer 18

Many monosaccharides joined together