G.E.D.
Science Test Preparation 2026 | Questions, Answers &
Detailed Rationales | GED Science Exam Prep
THIS EXAM INCLUDES:
✓ GED Science practice questions and answers
✓ Updated 2026 GED Science exam preparation material
✓ Detailed explanations and rationales
, G.E.D. Science Test Preparation 2026 |
Questions, Answers & Detailed Rationales
| GED Science Exam Prep
1. What is the basic functional unit of a living organism?
• A) DNA
• B) Cell
• C) Nucleus
• D) Tissue
Answer: B
Rationale: The cell is the basic functional unit of an organism, meaning
each cell has the potential to fulfill all the functions of that organism.
This is stated in the foundational concepts on page 1.
2. Approximately what percentage of GED Science questions are
about life sciences?
• A) 25%
• B) 30%
• C) 40%
• D) 50%
,Answer: C
Rationale: According to page 1, about 40% of the GED Science questions
will be about life sciences.
3. What molecule contains all the instructions needed to direct a cell's
activities?
• A) RNA
• B) Protein
• C) DNA
• D) Glucose
Answer: C
Rationale: DNA contains all the instructions needed to direct a cell's
activities, as stated on page 1.
4. What is the process of cell replication called?
• A) Photosynthesis
• B) Mitosis
• C) Respiration
• D) Evolution
, Answer: B
Rationale: Mitosis is defined as the replication of a cell and its DNA on
page 1.
5. How many different types of organisms are there according to the
text?
• A) Over 500,000
• B) Over 1 million
• C) Over 1.5 million
• D) Over 2 million
Answer: C
Rationale: The text states there are over 1.5 million different types of
organisms on page 1.
6. Which of the following is NOT a characteristic of living things?
• A) Has a life cycle
• B) Has the ability to reproduce
• C) Is made up of cells
• D) Has unlimited lifespan
Answer: D
Rationale: Living things have a life cycle (from birth to death), but
Science Test Preparation 2026 | Questions, Answers &
Detailed Rationales | GED Science Exam Prep
THIS EXAM INCLUDES:
✓ GED Science practice questions and answers
✓ Updated 2026 GED Science exam preparation material
✓ Detailed explanations and rationales
, G.E.D. Science Test Preparation 2026 |
Questions, Answers & Detailed Rationales
| GED Science Exam Prep
1. What is the basic functional unit of a living organism?
• A) DNA
• B) Cell
• C) Nucleus
• D) Tissue
Answer: B
Rationale: The cell is the basic functional unit of an organism, meaning
each cell has the potential to fulfill all the functions of that organism.
This is stated in the foundational concepts on page 1.
2. Approximately what percentage of GED Science questions are
about life sciences?
• A) 25%
• B) 30%
• C) 40%
• D) 50%
,Answer: C
Rationale: According to page 1, about 40% of the GED Science questions
will be about life sciences.
3. What molecule contains all the instructions needed to direct a cell's
activities?
• A) RNA
• B) Protein
• C) DNA
• D) Glucose
Answer: C
Rationale: DNA contains all the instructions needed to direct a cell's
activities, as stated on page 1.
4. What is the process of cell replication called?
• A) Photosynthesis
• B) Mitosis
• C) Respiration
• D) Evolution
, Answer: B
Rationale: Mitosis is defined as the replication of a cell and its DNA on
page 1.
5. How many different types of organisms are there according to the
text?
• A) Over 500,000
• B) Over 1 million
• C) Over 1.5 million
• D) Over 2 million
Answer: C
Rationale: The text states there are over 1.5 million different types of
organisms on page 1.
6. Which of the following is NOT a characteristic of living things?
• A) Has a life cycle
• B) Has the ability to reproduce
• C) Is made up of cells
• D) Has unlimited lifespan
Answer: D
Rationale: Living things have a life cycle (from birth to death), but
