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#solute concentration

5 public questions tagged with this topic.

Membrane Transportation

In a U-tube experiment, water moves from:

A classical U-tube experiment visualizes osmosis by dividing tube into two arms with a membrane impermeable to solute like sodium chloride but permeable to water via narrow pores or aquaporin analogues. Each arm filled with aqueous solution of different concentration. Water activity and chemical potential are inversely related to solute concentration; lower solute means more free water molecules with higher escaping tendency. Consequently random thermal motion results in greater diffusive flux of water from low solute concentration side where water concentration high toward high solute side wh

Ref: Lodish et al., Molecular Cell Biology, Chapter: Osmosis and U-Tube Demonstration of Water Movement.

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Water and Mole Concept

Which of the following properties increases with solute concentration?

Boiling point correctly describes the effect or change asked about in this question. In Water and Mole Concept, understanding cause-and-effect relationships is essential for predicting biological outcomes. Boiling point occurs because of specific molecular interactions, thermodynamic principles, or regulatory mechanisms that govern this biological process. The other options (Freezing point, Vapor pressure, and Osmotic pressure) describe either opposite effects, effects that occur under different conditions, or changes associated with unrelated processes.

Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 2

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Water and Mole Concept

Which of the following solutions has the highest osmotic pressure?

1M NaCl is the scientifically accurate answer to this question. Within the study of Water and Mole Concept, this concept is well-established through extensive research and is documented in standard scientific literature. The specific properties, mechanisms, or characteristics of 1M NaCl directly address what is being asked. Among the other options, 1M Glucose, 1M Urea, and 0.5M MgClâ‚‚ do not correctly answer this question because they either refer to different concepts, describe properties of other molecules or processes, or represent common misconceptions about this topic.

Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 2

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WATER POTENTIAL+PYQS

Increase in solute concentration causes water potential to:

Pick D: Become more negative. Thinking through WATER POTENTIAL step by step rules out the lookalikes and leaves Become more negative. Skip these: A) Increase; B) Become zero; C) Become less negative. For hormones and genes, match the molecule or gene to its real role, not a neighboring pathway.

Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.

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