Question

question 1: which statement is true about water molecules? the oxygen atom has a negative charge. the hydrogen atoms do not share electrons. water molecules move randomly around each other. question 2: how does water relate to the ability of a living thing to generate energy? the cell is an aqueous environment. without the proper balance of water, chemical reactions in cells could not take place. question 3: what is the most important role of hydrogen bonding between water molecules? it enables water molecules to bond to each other.

Explanation:

• For Question 1: In a water molecule ($H_2O$), the oxygen atom is more electronegative than hydrogen. It has a partial negative charge and the hydrogen atoms have partial positive charges. The hydrogen - atoms share electrons with the oxygen atom in a covalent bond, and water molecules move randomly in the liquid state due to thermal energy. So the correct statement is that water molecules move randomly around each other.
• For Question 2: Water is essential for many biological processes related to energy generation. Cellular respiration, which generates energy in the form of ATP, occurs in an aqueous environment within cells. Many of the chemical reactions involved in breaking down glucose and other fuel molecules require water as a solvent or reactant. Without the proper balance of water, these chemical reactions in cells could not take place.
• For Question 3: Hydrogen bonding between water molecules helps water to have high surface - tension, high heat capacity, and the ability to dissolve many substances. But the most important role is that it enables water to have a high heat capacity, which helps in regulating temperature in living organisms and the environment.

Answer:

Question 1: Water molecules move randomly around each other.
Question 2: Without the proper balance of water, chemical reactions in cells could not take place.
Question 3: It enables water to have a high heat capacity to help regulate temperature.