Properties of Water: Biology Help!?

Well I do not know about human biology but I do know that four properties of water due to hydrogen bonding are 1. Adhesion and Cohesion 2. Is a solvent 3. Solid is less dense than liquid 4. Is a temperature moderator Hope this helps! :)

1. The four emergent properties of water?

Cohesion helps biology because without it, plants could not live. The importance of ice floating is simple; If ice froze at the bottom of a body of water, it would freeze the fish to death. However, this property allows water to freeze from the top, and float.

2. what are the properties of water?

It is H20, so two hydrogens bonded to one oxygen. The boiling point is 100 degrees C or 212 F, freezing point is 0 C or 32 F. The O is much larger than the 2 H, so it pulls more on the shared electrons giving the O a slight negative charge and the H's a slight positive charge. This makes it a polar molecule. This property also means that the H end of one molecule is attracted to the -O end of another and so molecules for hydrogen bonds between them. This gives water a high surface tension. That is why you can float a metal needle on water even though metal should sink, it is also how some insects can walk on water. The polarity and hydrogen bonding also means that water reaches it's densest point at 4 degrees celsius. Most materials become more dense when the become a solid, water does not . Below 4 C it expands and becomes less dense. Thus ice is less dense than water and floats. That is why lakes and rivers dont freeze solid in the winter and fish can live in them. Hope that is enough to get you started

3. How to explain the properties of water? AP biology please help!?

it is very polar, it has high intermolecular forces due to hydrogen bonding and dipole-dipole forces, and london dispersion forces. It has a high boiling point. Electrons excited by by absorption of light in in photosystem II are transferred to an electron transport chain and therefore must be replaced. According to the Z scheme, replacement electrons come directly to p80 chlorophyll from water.

4. Describe two properties of water molecule and how these properties effect living things?

Water is the medium of life. It is the most abundant compound found in all organisms. It varies from 65to 89 % in different organisms. Human tissues contain about 20 % water in bone cells and 85% in brain cells. Almost all the reactions of a cell occur in the presence of water. It also takes part in many biochemical reactions such as hydrolysis of macromolecules. It is also use as a raw material in photosynthesis. Following properties make it essential for life: Solvent property Water is a polar molecule. It is a best solvent for polar substances. When ionic substances are dissolved in water, they dissociate into positive and negative ions. When a salt, such as sodium chloride is put into water the negative end of the water molecules are attracted to the sodium ions and positive ends attracted to sodium ions. Heat capacity Water has ability of absorbing heat with minimum of change in its own temperature. Heat of vaporization Water has a high heat of vaporization. Water absorbs much heat as changes from liquid to gas. Protection Water is effective lubricant, which provides protection against damage resulting from friction e.g., tears protect the eye surface from the rubbering of eyelids. Water also forms a fluid cushion around organ that protect them from trauma.

5. What are some physical properties of water?

the main serious one is that its boiling component is severe. this is finished via the non-covalent interactions that ensue between oxygen and hydrogen atoms, referred to as hydrogen bonds. As those bonds ensue, the flexibility saved in the molecular matrix grows, so which you require greater ability to make water boil, than what could be theoretically envisioned from a molecule alike. think of working example in ethanol.

6. Explain two properties of water that are important to life.?

The biochemical reactions that sustain life need a fluid in order to operate. In a liquid, molecules can dissolve and chemical reactions occur. And because a liquid is always in flux, it effectively conveys vital substances like metabolites and nutrients from one place to another, whether it's around a cell, an organism, an ecosystem, or a planet. Getting molecules where they need to go is difficult within a solid and all too easy within a gas-vapor-based life would go all to pieces. And why is water the best liquid to do the job? For one thing, it dissolves just about anything. "Water is probably the best solvent in the universe," says Jeffrey Bada, a planetary scientist at the Scripps Institution of Oceanography in La Jolla, Calif. "Everything is soluble in water to some degree. Water plays another key role in the biochemistry of life: bending enzymes. Enzymes are proteins that catalyze chemical reactions, making them occur much faster than they otherwise would. To do their handiwork, enzymes must take on a specific three-dimensional shape. Never mind how, but it is water molecules that facilitate this

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