O Level Biology MCQs & Structured Questions | Osmosis, Diffusion, Proteins & DNA

Описание: In this video, we solve O Level Biology MCQs and structured (long) questions focusing on osmosis, diffusion, cell biology, and biomolecules, explained step by step using CAIE past paper–style questions.

This lecture combines concept explanation + exam technique, helping students understand why an answer is correct and how to write high-scoring responses in exams.

📚 Topics & Questions Covered

✔ Movement of water between two plant cells
✔ Understanding water potential and osmosis
✔ Difference between osmosis and active transport
✔ Completing the definition of diffusion
✔ Concentration gradient explained clearly
✔ Diffusion of gases experiment (two jars experiment)
✔ Direction of diffusion (upwards & downwards)
✔ Roles of proteins in cells
✔ Role of DNA in controlling cell activities
✔ Organelle responsible for protein synthesis (ribosomes)
✔ Similarities between starch and cellulose
✔ Plant-only substances: starch and cellulose

🎯 Learning Outcomes

After watching this video, students will be able to:

Explain osmosis using water potential

Correctly complete definitions in exams

Identify diffusion in experimental setups

Differentiate between diffusion, osmosis, and active transport

Describe the functions of proteins and DNA

Answer structured biology questions confidently

👩‍🎓 Who Is This Video Helpful For?

✅ O Level Biology students
✅ CAIE candidates
✅ Students preparing for Paper 1 (MCQs) and Paper 2 (Structured)
✅ Learners confused about transport processes
✅ Exam-revision and concept-building students

🔍 What Students Commonly Search For

Osmosis water potential questions

Diffusion MCQs O Level Biology

Diffusion experiment explanation

Proteins and DNA functions biology

Ribosome function question

Starch vs cellulose biology

CAIE biology structured questions

Papacambridge biology solutions

⚠️ Common Exam Mistakes Addressed

❌ Confusing osmosis with active transport
❌ Forgetting water potential terminology
❌ Writing incomplete definitions of diffusion
❌ Mixing up starch, glycogen, and cellulose
❌ Saying nucleus makes proteins instead of ribosomes

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📘 O & A Level Biology made simple, logical, and exam-focused.

O Level Biology, Osmosis, Diffusion, Water Potential, Proteins and DNA, Ribosome Function, Starch and Cellulose, CAIE Biology Past Papers, Papacambridge Biology, Biology MCQs and Structured Questions, Learn With Miss Sehrish

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