5. How Do We Obtain The Energy We Need?

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Subsidiary

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Subsidiary.

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Lolly

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In the case of an ice lolly we could perhaps see the kinetic energy in the ice slipping down your hand.

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Plateaux

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A heating curve is characterized by one or two plateaux (flat areas). Where heating energy added to the substance does not result in an increase in temperature.

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Gaseous

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How many times have you wandered into the kitchen to find out what smells so good? The reason you can smell foods from different rooms. It's because gaseous particles released by the food travel by a process called diffusion.

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calorimetry

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In this experiment you will use the technique of a calorimetry. And what you know about the relationship of thermal energy Q. And temperature t to measure the temperature of a red hot object indirectly.

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Polystryrene

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Polystryrene or similar lid for beaker With hole for the thermometer.

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Chemical reactions.

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Synthesis, Combustion, displacement, and decomposition reactions.

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Homologous

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Organic compounds that have similar properties. Are grouped into families and called homologous series.

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Methane

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Methane belongs to the alkane homologous series.

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distillation

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When crude oil is extracted from the ground. It contains a mixture of hydrocarbons of varying chain length. Fraction of distillation then separates the components of the mixture into factions.

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Cracking.

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The longer change therefore often undergo a process called. Cracking whereby they are broken down into more useful, shorter chains.

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Reforming.

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The short term things can also be converted to more stable branched chains or rings. Using a catalyst in the process of reforming.

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Waxes

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Heavy oil and waxes

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Cellular

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All these processes involve thousands of biochemical reactions. Referred to as cellular metabolism.

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Substrate.

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Engines are proteins that act on reactance called substrates. And convert them into products. That process may involve breaking substrates down into simpler substances（Catabolism） or joining Two or more substrates together to make new products ( anabolism).

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Denatured

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Equally when subjected to high temperatures. Their shape and structure is destroyed, they can no longer function. And they're safe to be Denatured.

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Protease.

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From Protein to amino acids.

An example of a reaction that occurs in the digestive system with the help of enzymes.

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Palisade.

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Palisade cells contain a large number of green structures called. Chloroplasts.

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Chlorophylls

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Chlorophylls are special pigments located on the chloroplast membranes of plants which are able to. Absorb light at specific wavelengths.

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Carotenoids

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Chlorophyll a, chlorophyll B and carotenoids Absorb light at a slightly different wavelength. And together cover a wide range of the spectrum.

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.Respiration.

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There are two forms of cellular respiration. Aerobic and. And anaerobic.

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Glycolysis.

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There are three phases in aerobic respiration that are involved in turning glucose into energy. Glycolysis, the Kerbs cycle and. The electron transport chain.

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Osmosis

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Any living cell exchanges what is environment via a process called osmosis.

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Permeable

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semipermeable membrane

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ventilation

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The human body is equipped with a ventilation system that ensures adequate levels of gas exchange. The respiratory system. Comprises all the structures that allow this process to be as efficient as possible.