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<h2 class="wp-block-heading" id="h-introduction">Introduction</h2>
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<p>Hello everyone, welcome to today’s class! My name is Adebanke, and I’ll be taking you through some <strong>NABTEB Biology past questions</strong> with detailed explanations. These solutions will also be helpful if you’re preparing for <strong>WAEC or JAMB Biology exams</strong>.</p>
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<p>Let’s get started with the questions and answers.</p>
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https://www.youtube.com/watch?v=bce8W7g1akU&t=92s
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<h2 class="wp-block-heading" id="h-question-1-what-is-osmosis">Question 1 – What is Osmosis?</h2>
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<p>The first question says: <strong>What is osmosis?</strong></p>
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<h3 class="wp-block-heading" id="h-correct-definition">Correct Definition</h3>
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<p>Osmosis is the <strong>movement of water molecules from a region of lower concentration to a region of higher concentration through a semi-permeable membrane.</strong></p>
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<h3 class="wp-block-heading" id="h-options-given">Options Given</h3>
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<p>A. Movement of salt from high to low concentration<br>B. Movement of water across a semi-permeable membrane<br>C. Movement of gases into cells<br>D. Absorption of nutrients by the root hairs</p>
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<h3 class="wp-block-heading" id="h-correct-answer-b-movement-of-water-across-a-semi-permeable-membrane">Correct Answer: <strong>B. Movement of water across a semi-permeable membrane</strong></h3>
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<h3 class="wp-block-heading" id="h-explanation">Explanation</h3>
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<li>Osmosis involves <strong>water only</strong>, not salts or gases.</li>
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<li>The membrane must be <strong>semi-permeable</strong>, meaning it allows only certain molecules (like water) to pass through.</li>
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<li>This process is vital for maintaining balance in <strong>plant and animal cells</strong>, ensuring proper hydration and nutrient absorption.</li>
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<h3 class="wp-block-heading" id="h-real-life-examples-of-osmosis">Real-Life Examples of Osmosis</h3>
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<li>Movement of water into plant roots from the soil.</li>
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<li>Preservation of food in concentrated sugar or salt solutions (which draw water out of microbes by osmosis).</li>
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<li>Swelling of red blood cells when placed in distilled water.</li>
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<h2 class="wp-block-heading" id="h-exam-tip">Exam Tip</h2>
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<p>In NABTEB and WAEC Biology exams, always state that osmosis is the <strong>movement of water molecules only</strong> through a <strong>semi-permeable membrane</strong>. Many students lose marks by leaving out either of these key terms.</p>
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<p><mark style="background-color:rgba(0, 0, 0, 0)" class="has-inline-color has-vivid-cyan-blue-color"><strong>Watch the full tutorial here:</strong></mark> https://www.youtube.com/watch?v=bce8W7g1akU&t=92s </p>
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<h2 class="wp-block-heading" id="h-conclusion">Conclusion</h2>
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<p>Osmosis is one of the most important transport processes in Biology. It plays a vital role in <strong>plants, animals, and everyday applications like food preservation</strong>. Understanding it thoroughly will help you answer related questions in <strong>NABTEB, WAEC, and JAMB Biology exams</strong> with confidence.</p>
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<p><strong><mark style="background-color:rgba(0, 0, 0, 0)" class="has-inline-color has-vivid-cyan-blue-color">Related Videos:</mark></strong></p>
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<h2 class="wp-block-heading" id="h-keywords">Keywords.</h2>
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<ul class="wp-block-list"><!-- wp:list-item -->
<li>NABTEB Biology past questions and answers</li>
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<li>NABTEB Biology past questions with solutions</li>
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<li>WAEC and NABTEB Biology past papers</li>
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<li>JAMB and NABTEB Biology preparation</li>
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<li>Osmosis definition Biology exam</li>
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