Question

ОЧЕНЬ ОЧЕНЬ СРОЧНО ПОМОГИТЕ ПОЖАЛУЙСТА!!!!!! Якими особливостями будови молекули зумовлені унікальні біологічні властивості води?

Answer 1

Ответ:

1) наявність ковалентних зв'язків між атомами; 2) наявність водневих зв'язків між молекулами; 3) дипольність молекул; 4) малі розміри молекул.(надеюсь правильно,украинский я не знаю)

Answer 2

Unique Biological Properties of Water

Water is a fascinating molecule with unique biological properties that are essential for life. These properties are primarily determined by the structure and bonding of water molecules. Here are some of the key features that contribute to the exceptional biological properties of water:

1. Polarity: Water is a polar molecule, meaning it has a partial positive charge on one end (hydrogen) and a partial negative charge on the other end (oxygen). This polarity allows water molecules to form hydrogen bonds with each other and with other polar molecules. These hydrogen bonds give water its cohesive and adhesive properties, allowing it to stick to surfaces and form droplets.

2. High Specific Heat Capacity: Water has a high specific heat capacity, which means it can absorb and store a large amount of heat energy without a significant increase in temperature. This property helps regulate temperature in living organisms and maintains stable environments, such as bodies of water or the human body.

3. High Heat of Vaporization: Water has a high heat of vaporization, which means it requires a significant amount of heat energy to change from a liquid to a gas. This property allows organisms to cool down through evaporation, such as sweating in humans or panting in animals.

4. Density Anomaly: Unlike most substances, water reaches its maximum density at 4 degrees Celsius. As water cools below this temperature, it expands and becomes less dense. This property is crucial for the survival of aquatic organisms during winter, as the ice that forms on the surface of bodies of water acts as an insulating layer, preventing the water below from freezing completely.

5. Solvent Properties: Water is an excellent solvent due to its polarity. It can dissolve a wide range of substances, including polar molecules and ions. This property is essential for various biological processes, such as nutrient transport, waste removal, and chemical reactions within cells.

6. Surface Tension: Water exhibits surface tension, which is the cohesive force between water molecules at the surface of a liquid. This property allows certain organisms, like insects, to walk on water without sinking.

These unique biological properties of water play a vital role in supporting life on Earth. They enable water to function as a universal solvent, regulate temperature, provide a medium for chemical reactions, and facilitate the transport of nutrients and waste within living organisms.

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