NST1502 Assignment 4 PORTFOLIO (COMPLETE ANSWERS) 2025 - DUE 2 October 2025

NST1502 Assignment 4
PORTFOLIO
(COMPLETE ANSWERS)
2025 - DUE 2 October
2025
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[School]
[Course title]

, NST1502 Assignment 4 PORTFOLIO (COMPLETE ANSWERS) 2025 - DUE 2 October 2025

 Course

 Natural Science and Technology for classroom II (NST1502)

 Institution

 University Of South Africa (Unisa)

 Book

 New Natural Science and Technology

NST1502 Assignment 4 PORTFOLIO (COMPLETE ANSWERS) 2025 - DUE 2 October 2025 ; 100%
TRUSTED Complete, trusted solutions and explanations.

QUESTION 1 1.1 Define Kinetic energy. (2)

1.2 Explain how energy is transferred in an ecosystem. (2)

1.3 What is the main purpose of photosynthesis in plants? (2)

1.4 What is cellular respiration? (2)

1.5 Compare aerobic and anaerobic respiration. (4)

1.6 What is the role of ATP in cellular processes? (2)

1.7 Explain how ATP is synthesized in the mitochondria. (3)

1.8 What does ADP stand for? (1)

1.9 Explain the process of converting ADP to ATP. (2)

1.10 Insert a screenshot to show your contributions to one of the engagements in the first unit.
(Take this from the discussion forum based on unit 1) (2) [22]

ESTION 1

1.1 Define Kinetic energy. (2)
Kinetic energy is the energy an object possesses due to its motion.



1.2 Explain how energy is transferred in an ecosystem. (2)
Energy is transferred in an ecosystem through food chains and food webs, starting from
producers (plants) to consumers (animals) and finally to decomposers.