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Key Facts: BGCSE Biology 0572 Exam

0572

BEC Syllabus Code

Botswana Examinations Council

Paper 1 MCQs

BEC Exam Structure

45m

Paper 1 Duration

BEC Exam Timetable

Grade C

Target Benchmark

Botswana Education Standard

100

Practice Questions

OpenExamPrep Question Bank

BGCSE Biology 0572 is administered by the Botswana Examinations Council (BEC) for senior secondary students. The assessment tests core biological principles across cell biology, plant transport and photosynthesis, human organ systems, genetics, ecological conservation, and applied biotechnology. This 100-question practice bank provides comprehensive preparation aligned with the BEC 0572 syllabus.

Sample BGCSE Biology 0572 Practice Questions

Try these sample questions to review concepts for the BGCSE Biology 0572 exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which cell organelle is responsible for synthesizing ATP through aerobic respiration?

A.Ribosome

B.Mitochondrion

C.Golgi apparatus

D.Chloroplast

Explanation: Mitochondria are known as the powerhouses of the cell because they carry out aerobic respiration to produce ATP energy from glucose and oxygen. Ribosomes synthesize proteins, while the Golgi apparatus modifies and packages lipids and proteins. Chloroplasts carry out photosynthesis in plant cells.

2Which structural feature is present in plant cells but absent in animal cells?

A.Cell membrane

B.Cytoplasm

C.Cellulose cell wall

D.Nucleus

Explanation: Plant cells possess a rigid outer cell wall made of cellulose that provides shape and structural support. Animal cells lack a cell wall and are enclosed only by a cell membrane. Both plant and animal cells contain a nucleus, cytoplasm, and cell membrane.

3What chemical reagent is used to test for the presence of reducing sugars such as glucose?

A.Iodine solution

B.Benedict's solution

C.Biuret reagent

D.Ethanol

Explanation: Benedict's solution changes from blue to green, yellow, or brick-red when heated with a reducing sugar like glucose. Iodine solution tests for starch, turning blue-black. Biuret reagent tests for proteins, turning violet, while ethanol tests for lipids in the emulsion test.

4Which process describes the net movement of water molecules from a region of higher water potential to lower water potential across a selectively permeable membrane?

A.Diffusion

B.Active transport

C.Osmosis

D.Phagocytosis

Explanation: Osmosis is the specialized diffusion of solvent (water) molecules down a water potential gradient through a partially permeable membrane. General diffusion applies to any solute or gas particles. Active transport moves substances against a concentration gradient using energy, while phagocytosis is bulk engulfment of particles.

5Enzymes act as biological catalysts because they:

A.Increase the activation energy of metabolic reactions

B.Decrease the activation energy required for reactions to occur

C.Are consumed completely during chemical reactions

D.Change the temperature of the cellular environment

Explanation: Enzymes speed up chemical reactions by lowering the activation energy barrier needed for reactants to form products. Enzymes remain unchanged at the end of reactions and can be reused. They operate within specific temperature ranges without altering body temperature.

6What happens to a red blood cell when placed in a hypertonic salt solution?

A.It swells and undergoes lysis

B.It loses water by osmosis and becomes crenated

C.It absorbs salt ions by active transport until balanced

D.It remains unchanged in volume and shape

Explanation: In a hypertonic solution (lower water potential than cytoplasm), water moves out of the red blood cell by osmosis. Because animal cells lack a cell wall, losing water causes the cell to shrivel and shrink, a process called crenation. Swelling and lysis occur in hypotonic solutions.

7According to the lock-and-key model of enzyme action, which statement correctly describes substrate binding?

A.The enzyme changes its primary structure to match any substrate shape

B.The substrate's shape is complementary to the specific shape of the enzyme's active site

C.Substrates bind non-specifically to the cell wall before entering the active site

D.The active site dissolves the substrate upon initial contact

Explanation: The lock-and-key hypothesis states that an enzyme's active site has a rigid, complementary 3D shape that fits only specific substrate molecules. This specificity explains why individual enzymes catalyze distinct biochemical reactions.

8Which biological macromolecule is formed by glycerol esterified to three fatty acid molecules?

A.Triglyceride

B.Polysaccharide

C.Polypeptide

D.Nucleic acid

Explanation: Triglycerides (fats and oils) consist of one glycerol backbone bonded to three fatty acid tails via ester linkages. Polysaccharides are composed of monosaccharide sugar units, polypeptides consist of amino acids, and nucleic acids are composed of nucleotides.

9How does extreme heat permanently inactivate an enzyme?

A.It breaks peptide bonds and converts the enzyme into glucose

B.It alters the tertiary shape of the protein, denaturing the active site

C.It removes all coenzymes from the cell nucleus

D.It freezes the substrate molecules so they cannot diffuse

Explanation: High temperatures increase kinetic energy, causing atoms within the enzyme to vibrate excessively. This disrupts hydrogen and ionic bonds stabilizing the protein's tertiary structure, denaturing the active site so substrates can no longer bind.

10Active transport across a plasma membrane differs from passive diffusion because active transport:

A.Moves substances down their concentration gradient without ATP

B.Requires carrier proteins and metabolic energy (ATP) to move solutes against a concentration gradient

C.Occurs exclusively in dead cells

D.Involves only non-polar gas molecules like oxygen

Explanation: Active transport utilizes membrane carrier proteins and cellular energy (ATP) to pump molecules across a membrane against their concentration gradient (from low to high concentration). Diffusion is a passive process that moves substances down a gradient without ATP.

About the BGCSE Biology 0572 Exam

The Botswana General Certificate of Secondary Education (BGCSE) Biology 0572 examination assesses high school biology concepts, including cell biology, plant physiology, human anatomy and physiology, genetics and evolution, ecology, and biotechnology.

Exam sponsor: Botswana Examinations Council (BEC). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Multiple-choice Paper 0572/01 (50 minutes), theory Paper 0572/03 (1 hour 15 minutes), and practical Paper 0572/04 (1 hour 15 minutes) or Alternative to Practical 0572/05 (1 hour)

Time Limit

0572/01: 50 minutes; 0572/03: 1 hour 15 minutes; 0572/04: 1 hour 15 minutes or 0572/05: 1 hour

Passing Score

Grades A* to G (U = ungraded); Grade C or better is a credit

Exam / Certification Fees

P82.00 once-off plus P247.00 per syllabus (2026 BGCSE private candidates)

Exam sponsor website

Reported exam pass rate: Not published by BEC. BEC publishes national grade distributions by syllabus rather than a pass rate Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

16%

Cell Biology & Biological Molecules

Cell structure and organization, organelles, biological molecules (carbohydrates, lipids, proteins), enzymes, diffusion, osmosis, and active transport.

18%

Plant Physiology & Transport

Photosynthesis, leaf structure, transpiration, xylem and phloem transport, plant mineral nutrition, and tropisms.

22%

Human Anatomy & Physiology

Human nutrition, digestion, circulatory system, gas exchange, respiration, excretion, nervous coordination, endocrine system, and human reproduction.

18%

Genetics, Inheritance & Evolution

Chromosomes, DNA structure, protein synthesis, mitosis, meiosis, monohybrid inheritance, variation, natural selection, and evolution.

16%

Ecology, Environment & Conservation

Ecosystems, food chains and webs, energy flow, biogeochemical cycles, population ecology, human impacts, pollution, and conservation biology.

10%

Biotechnology & Applied Biology

Uses of microorganisms in food and drug production, genetic engineering, recombinant DNA, monoclonal antibodies, and ethical considerations in biology.

Preparing for the BGCSE Biology 0572 Exam

What You Need to Know

Passing score: Grades A* to G (U = ungraded); Grade C or better is a credit
Assessment: Multiple-choice Paper 0572/01 (50 minutes), theory Paper 0572/03 (1 hour 15 minutes), and practical Paper 0572/04 (1 hour 15 minutes) or Alternative to Practical 0572/05 (1 hour)
Time limit: 0572/01: 50 minutes; 0572/03: 1 hour 15 minutes; 0572/04: 1 hour 15 minutes or 0572/05: 1 hour
Exam / certification fees: P82.00 once-off plus P247.00 per syllabus (2026 BGCSE private candidates) Official sources

Using Our Practice Resources

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BGCSE Biology 0572: Suggested Study Strategy

1Focus on core cell biology: master organelle functions, enzyme action models, and passive vs active transport mechanisms.

2Understand plant physiology: memorize equations for photosynthesis, leaf tissue adaptations, and xylem vs phloem transport.

3Master human anatomy: trace blood circulation routes, digestive enzyme breakdown pathways, and hormonal control loops.

4Practice genetics calculations: complete monohybrid genetic crosses, Punnett squares, and understand pedigree diagrams.

5Review ecological concepts: know trophic levels, energy transfer losses (10% rule), nitrogen/carbon cycles, and conservation principles.

Frequently Asked Questions

What is BGCSE Biology 0572?

BGCSE Biology (Syllabus 0572) is the national senior secondary biology qualification in Botswana, administered by the Botswana Examinations Council (BEC).

How many questions are in BGCSE Biology Paper 1?

Paper 1 consists of 40 compulsory multiple-choice questions to be completed in 45 minutes.

What main topics are covered in the 0572 syllabus?

The syllabus covers cell biology, biological molecules, plant physiology, human anatomy and physiology, genetics, ecology, and biotechnology.

What is considered a passing grade in BGCSE Biology?

Grades range from A* to G. Grade C is generally regarded as a solid pass for entry into tertiary institutions and A-level / diploma programs.

Who sets and marks the BGCSE Biology examination?

The examination is set and administered nationally by the Botswana Examinations Council (BEC).

Free Practice Questions for BGCSE Biology 0572

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