1.7 Carbohydrates

Question 1

What are carbohydrates composed of?

Answer 1

Carbon, hydrogen and oxygen

Question 2

What are the simplest kind of carbohydrate called?

Answer 2

Monosaccharides, e.g. Glucose

Question 3

When 2 monosaccharides join together they form?

Answer 3

Disaccharides, e.g. Maltose

Question 4

Maltose is…

Answer 4

Glucose-glucose

Question 5

Sucrose is…

Answer 5

Glucose-fructose

Question 6

The reaction that joins two carbohydrates together is….

Answer 6

Condensation

Question 7

A condensation reaction is…

Answer 7

When two molecules are joined together by removing a water molecule

Question 8

Polysaccharides are…

Answer 8

Made of many sugar units joined together (polymers of monosaccharides)

Question 9

Starch is

Answer 9

A polymer of glucose found in plant tissues
Insoluble
Branches structure with lots of ‘ends’ - glucose easily released when needed

Question 10

Glycogen is…

Answer 10

Found in animals cells
(Humans) stored in muscle and liver cells
Compact 
Insoluble
Branched

Question 11

Cellulose is…

Answer 11

No enzymes in humans to digest cellulose - not used as an energy source
Remains undigested in intestines
Dietary fibre