Premium Essay

All About Science

In: Science

Submitted By Andy329
Words 566
Pages 3
MAY 2013

FHSB 1214


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. (No half mark is awarded in the finals marks)

Q1. (a) A chemical present in the body which serves as energy source is shown in Figure 3.1.
| | |


Figure 3.1

(i) Name the chemical molecule. (1 mark)

(ii) Describe how energy is released from this chemical molecule. (1 mark)

(b) A process during cellular respiration, in which pyruvate is oxidized into carbon dioxide is shown in Figure 3.2.

Figure 3.2

(i) Name the process described in Figure 3.2 and state the organelle involved in the process. (2 marks)

(ii) Explain the source of pyruvate for the process in Figure 3.2 in the eukaryotic cells. (2 marks)

(iii) Describe the importance of the process in Figure 3.2. (3 marks)

(iv) Pyruvate dehydrogenase complex is a…...

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