CENTRE FOR FOUNDATION STUDIES
FOUNDATION IN SCIENCE

FHSB 1214
BIOLOGY I

TUTORIAL 2
BASIC MOLECULES OF CELLS II
Student’s Guide:
At university level, the tutor facilitates student learning without spoon-feeding. Therefore, you are expected to: • Read your textbook, attempt the questions before the tutorial • You may enter the class and sign your attendance after showing your tutor that all tutorial questions have been completed; even if you don’t know how to do, write something - you’re not advised to leave answers blank in the finals. • Write answers on board if you wish to receive tutor feedback (no answer, no feedback) • Be independent: consult textbooks or dictionaries on your own first before asking the tutor • All questions are compulsory. 1 mark may reflect 1 answer point.

(Source : Final Examination, April 2015)
Q1. (a) Figure 1.1 shows the structure of a triglyceride.
[pic]
Figure 1.1

Based on Figure 1.1, answer the following questions.

i) During the digestion of this biological molecules, the bond labeled X is broken down. State the type of reaction involved here. (1 mark)

ii) In your answer booklet, draw the products of the molecule breakdown of the triglyceride (4 marks)

(Source: Final examination, Sept 2012)
Q2. (a) Lipid A showed in Figure 2.1 and a haemoglobin molecule showed in Figure 2.2 are found in mammal cells. Both molecules are built up from basic building block.

Figure 2.1 Figure 2.2

(i) Name lipid A. (1 mark)

(ii) State the main function of lipid A and hemoglobin molecules. (2 marks)

(iii) Hemoglobin is made up of a cluster