NST1502 Assignment 4
PORTFOLIO
(COMPLETE ANSWERS)
2025 - DUE 2 October
2025
[Document subtitle]
[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]
QUESTION 2 State whether the statements below are True or False. 2.1 Energy cannot be
created or destroyed, only transferred or converted from one form to another. 2.2
Photosynthesis occurs in the mitochondria of plant cells. 2.3 Cellular respiration produces
oxygen as a byproduct 2.4 ATP is the primary energy currency of the cell. 2.5 ADP has more
stored energy than ATP. 2.6 A phylogenetic tree is used to show evolutionary relationships
among species. 2.7. Human somatic cells are diploid, containing two sets of chromosomes. 2.8
Gametes are haploid cells, meaning they contain two sets of chromosomes. 2.9 Summative
assessment is conducted during the learning process to provide ongoing feedback to students.
[9x2=18]
QUESTION 3 3.1 Using your understanding of the principles of evolution, analyze the
evolutionary relationship between two hypothetical species, Species A and Species B. Species A
is found in tropical rainforests, while Species B inhabits arid deserts. Consider the following
components in your response: 4 3.1.1 Describe two specific adaptations each species has
developed to survive in their respective environments. Explain how these adaptations enhance
their survival and reproduction. (4) Distribution of marks: Identification of Adaptations 2
Explanation of Survival and Reproduction 2 3.1.2 Discuss the possible evolutionary mechanisms
PORTFOLIO
(COMPLETE ANSWERS)
2025 - DUE 2 October
2025
[Document subtitle]
[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]
QUESTION 2 State whether the statements below are True or False. 2.1 Energy cannot be
created or destroyed, only transferred or converted from one form to another. 2.2
Photosynthesis occurs in the mitochondria of plant cells. 2.3 Cellular respiration produces
oxygen as a byproduct 2.4 ATP is the primary energy currency of the cell. 2.5 ADP has more
stored energy than ATP. 2.6 A phylogenetic tree is used to show evolutionary relationships
among species. 2.7. Human somatic cells are diploid, containing two sets of chromosomes. 2.8
Gametes are haploid cells, meaning they contain two sets of chromosomes. 2.9 Summative
assessment is conducted during the learning process to provide ongoing feedback to students.
[9x2=18]
QUESTION 3 3.1 Using your understanding of the principles of evolution, analyze the
evolutionary relationship between two hypothetical species, Species A and Species B. Species A
is found in tropical rainforests, while Species B inhabits arid deserts. Consider the following
components in your response: 4 3.1.1 Describe two specific adaptations each species has
developed to survive in their respective environments. Explain how these adaptations enhance
their survival and reproduction. (4) Distribution of marks: Identification of Adaptations 2
Explanation of Survival and Reproduction 2 3.1.2 Discuss the possible evolutionary mechanisms
