NST1502 Assignment 04 2026 (Portfolio) Due 16 October 2026

UNIVERSITY OF SOUTH AFRICA (UNISA)
College of Education: Department of Science and Technology Education



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NATURAL SCIENCES AND TECHNOLOGY
FOR THE CLASSROOM 2
Assignment 04 (Portfolio) — 2026


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Module Code: NST1502

Module Name: Natural Sciences and Technology for the
Classroom 2

Assignment No.: 04 (Portfolio)

Due Date: 16 October 2026

Year: 2026

Total Marks: 100




Submitted in partial fulfilment of the requirements for
Natural Sciences and Technology for the Classroom 2 at the University of South Africa.

, UNISA | NST1502 Assignment 04 (Portfolio)



Question 1: Multiple-Choice Questions


1.1 Which molecule is regarded as the main energy currency of a cell?
A. ADP B. ATP
C. DNA D. Glucose

Answer: B. ATP
1.2 In which organelle does photosynthesis take place?
A. Mitochondrion B. Nucleus
C. Chloroplast D. Ribosome

Answer: C. Chloroplast

1.3 Which type of respiration occurs in the absence of oxygen?
A. Aerobic respiration B. Anaerobic respiration
C. Photosynthesis D. Transpiration

Answer: B. Anaerobic respiration

1.4 Which of the following is a renewable source of energy?
A. Coal B. Oil
C. Wind D. Natural gas

Answer: C. Wind
1.5 Energy stored in an object because of its position is called:
A. kinetic energy B. potential energy
C. sound energy D. light energy

Answer: B. potential energy

1.6 An object possesses kinetic energy when it is:
A. moving B. stationary
C. cooling D. stored

Answer: A. moving

1.7 A drum is classified as a:
A. string instrument B. percussion instrument
C. wind instrument D. electrical instrument

Answer: B. percussion instrument

1.8 A guitar produces sound mainly when its strings are:
A. compressed B. heated
C. plucked or strummed D. blown



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