Multiple Choice
What is the most serious effect of water pollution created by human activity?
151
views
3. Water
Properties of Water- The Universal Solvent
Multiple Choice
How does water's ability to conduct electricity relate to its importance for life?
A
It allows dissolved ions to move freely, enabling essential biological processes such as nerve impulse transmission.
B
It causes water to be unstable and unsuitable for supporting life.
C
It prevents the movement of charged particles, inhibiting cellular communication.
D
It makes water a poor solvent for most biological molecules.
Verified step by step guidance1
Understand the concept of water's ability to conduct electricity: Water itself is a poor conductor of electricity, but when ions (charged particles) are dissolved in it, they enable the conduction of electrical currents.
Recognize the biological significance of dissolved ions: In living organisms, ions such as sodium (Na⁺), potassium (K⁺), and calcium (Ca²⁺) are dissolved in water and play critical roles in processes like nerve impulse transmission and muscle contraction.
Relate this to nerve impulse transmission: Nerve cells (neurons) rely on the movement of ions across their membranes to generate and propagate electrical signals. This movement is facilitated by water as a medium for dissolved ions.
Eliminate incorrect options: Water does not cause instability or unsuitability for life, nor does it prevent the movement of charged particles. Additionally, water is an excellent solvent for many biological molecules, not a poor one.
Conclude the correct answer: Water's ability to conduct electricity through dissolved ions is essential for enabling biological processes like nerve impulse transmission, making it vital for life.
Related Videos
Related Practice
