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| living things have a highly ordered chemical and physical? |
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all living things use?
it is the ability to do work to maintain themselves and grow |
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| vast number of chemical reactions that are together called this |
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| living things use energy to maintain stable internal conditions that are different from their surroundings in a process called? |
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| all life forms reproduce to perpetuate their kind and use this to record their individual characteristics and pass them on to their offspring |
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| true or false...the most basic features of living things are shared by all organisms, not just those that live in the sea |
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| the most important chemical that life involves |
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| the base of a complex "chemical soup" inside all organisms where the chemical reactions of metabolism take place |
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besides water, most of the chemicals that make life possible are ....
molecules that contain atoms of carbon, hydrogen, and usally oxygen |
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| high energy molecules that take energy to be made...tend to break down themselves |
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| composed mainly of just the basic elements of other organic molecules: carbon, hydrogen, and oxygen |
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| consist of much longer chains, which may contain components other than simple sugars |
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| such as starches are often used to store energy reserves |
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| provide support and protection |
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| a modified carbohydrate that some animals use as a skeletal material |
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the main ingredient of wood and plant fibers
plants and many algae produce a sturctural carb called... |
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| another major group of organic molecules and the yare composed of chains of smaller subunits |
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in proteins the subunits are?
they contain atoms of nitrogen as well as carbon, hydrogen, and oxygen typical of all organic compounds |
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| made up largely of protein |
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| proteins that speed up, or catalyze, specific chemical reactions ...without them metabolic reactions would occur slowly or not at all |
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| chemicals that act as messengers to help different parts of the body work together...type of protein |
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| also act as poisons, send chemical signals, produce light, act as antifreeze in the blood of some Antarctic fishes, and have countless other functions |
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| fats, oils, and waxes...another group of organic chemicals |
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| often used for energy storage and they repel water |
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| useful in buoyancy because they float and act as insulation from the cold...also marine organisms use them as a coating of wax to keep themselves from drying out |
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| some of these are lipids rather than proteins |
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