Polysaccharides+

Question 1

During early pregnancy, the glycogen in the cells lining the uterus is an important energy source for the embryo.

Suggest how glycogen acts as a source of energy.

Do not include transport across membranes in your answer.

Answer 1

Hydrolysed (to glucose);

2. Glucose used in respiration;
3. Ignore ‘Broken down’
4. ‘Energy produced’ disqualifies mp2

Question 2

Describe the structure of glycogen.

Answer 2

Polysaccharide of α-glucose;

OR

polymer of α-glucose;

2. (Joined by) glycosidic bonds

OR

Branched structure;