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Test: Osmosis - Year 11 MCQ


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10 Questions MCQ Test Biology for GCSE/IGCSE - Test: Osmosis

Test: Osmosis for Year 11 2024 is part of Biology for GCSE/IGCSE preparation. The Test: Osmosis questions and answers have been prepared according to the Year 11 exam syllabus.The Test: Osmosis MCQs are made for Year 11 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Osmosis below.
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Test: Osmosis - Question 1

What role does water play in the transportation of nutrients within plants?

Detailed Solution for Test: Osmosis - Question 1

In plants, water is crucial for transporting nutrients through the phloem. The dissolved nutrients are carried in the solution of water from the leaves to other parts of the plant.

Test: Osmosis - Question 2

What is the main function of osmosis in plant cells?

Detailed Solution for Test: Osmosis - Question 2

Osmosis helps maintain the balance of solute concentrations inside and outside the cell by moving water across the cell membrane. This balance is essential for proper cell function and turgidity.

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Test: Osmosis - Question 3

Which of the following best describes the direction of water movement during osmosis?

Detailed Solution for Test: Osmosis - Question 3

During osmosis, water moves from an area of high water concentration (low solute concentration) to an area of low water concentration (high solute concentration) across a partially permeable membrane.

Test: Osmosis - Question 4

How does osmosis contribute to the elimination of waste in the human body?

Detailed Solution for Test: Osmosis - Question 4

Osmosis assists in the removal of waste products by facilitating their dissolution in water, which is then excreted through urine. This process helps eliminate urea and excess salts from the body.

Test: Osmosis - Question 5

What happens to a plant cell when placed in a hypertonic solution?

Detailed Solution for Test: Osmosis - Question 5

In a hypertonic solution, the concentration of solutes outside the cell is higher than inside, causing water to move out of the cell. This leads to cell shrinkage and reduced turgidity.

Test: Osmosis - Question 6

Why is the cell membrane described as partially permeable?

Detailed Solution for Test: Osmosis - Question 6

The cell membrane is partially permeable because it selectively allows certain small molecules, like water, to pass through while blocking larger molecules, such as solutes.

Test: Osmosis - Question 7

Which process describes the movement of water across a cell membrane without energy input?

Detailed Solution for Test: Osmosis - Question 7

Osmosis is the process by which water moves across a cell membrane from an area of high water concentration to an area of low water concentration without requiring energy.

Test: Osmosis - Question 8

What is the primary effect of osmosis on red blood cells placed in a hypotonic solution?

Detailed Solution for Test: Osmosis - Question 8

In a hypotonic solution, the concentration of solutes outside the red blood cells is lower than inside, causing water to enter the cells rapidly, which can lead to bursting (hemolysis).

Test: Osmosis - Question 9

How does osmosis contribute to the process of nutrient uptake in plants?

Detailed Solution for Test: Osmosis - Question 9

Osmosis creates a pressure gradient in plant root cells that aids in the uptake of nutrients from the soil solution into the root cells.

Test: Osmosis - Question 10

What would likely occur if a cell's membrane were impermeable to water?

Detailed Solution for Test: Osmosis - Question 10

If a cell's membrane were impermeable to water, it would be unable to regulate turgidity or transport nutrients and waste effectively, leading to impaired cellular function and health.

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