Quiz
BIO ENZYMES
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Questions in this quiz (13)
1Activation energy is the energy required to [blank_start]initiate[blank_end] chemical reactions.
- Ainitiate
2The greater the amount of activation energy required, the [blank_start]slower[blank_end] the rate of reaction at any given temperature.
- Aslower
3Enzymes speed up chemical reactions by [blank_start]lowering[blank_end] the activation energy.
- Alowering
4We need enzymes or else many chemical reactions in living organisms will not occur or take a [blank_start]long time to complete[blank_end] unless activation energy is [blank_start]lowered.[blank_end]
- Along time to complete
- Blowered.
5Enzymes are [blank_start]biological catalysts[blank_end] that speeds up a chemical reaction without being [blank_start]chemically changed[blank_end] at the end of the reaction.
- Abiological catalysts
- Bchemically changed
6Amylase digests [blank_start]starch[blank_end], [blank_start]maltase[blank_end] digests maltose, cellulase digests cellulose, [blank_start]proteases[blank_end] digests proteins, and lipase digests [blank_start]fats[blank_end] (lipids).
- Astarch
- Bmaltase
- Cproteases
- Dfats
7The enzyme's active site is [blank_start]complementary[blank_end] to the shape of the [blank_start]substrates[blank_end] which it will act on.
- Acomplementary
- Bsubstrates
8Enzymes are [blank_start]protein[blank_end] in nature, substrate [blank_start]specific[blank_end], temperature and [blank_start]pH[blank_end] dependent, alters the rate of chemical reaction, remains chemically [blank_start]unchanged[blank_end] and it is reusable.
- Aprotein
- Bspecific
- CpH
- Dunchanged
9As the temperature [blank_start]increases[blank_end], the enzyme and substrate molecules will have more [blank_start]kinetic[blank_end] energy. They will move [blank_start]faster[blank_end] and collide more [blank_start]frequently[blank_end]. This will [blank_start]increase[blank_end] the rate of reaction.
- Aincreases
- Bkinetic
- Cfaster
- Dfrequently
- Eincrease
10The optimum temperature is when the reaction is [blank_start]fastest[blank_end], as the enzyme and substrate molecules have the [blank_start]greatest[blank_end] amount of kinetic energy. They collide most often. If it is above the optimum temperature, the [blank_start]3D protein structure[blank_end] of an enzyme is permanently destroyed and the enzyme is [blank_start]denatured[blank_end].
- Afastest
- Bgreatest
- C3D protein structure
- Ddenatured
11An enzyme is [blank_start]inactive[blank_end] at low temperatures.
- Ainactive
12Denaturation = change in the structure of enzyme and therefore the substrate is unable to [blank_start]fit[blank_end] into the active site.
- Afit
13When the pH is altered above or below the optimum pH, the rate of enzyme activity [blank_start]decreases[blank_end]. Extreme pH changes can cause [blank_start]denaturation[blank_end] of the enzyme.
- Adecreases
- Bdenaturation
Information
- Description
- Quiz on BIO ENZYMES, created by Ira Naidu on 29/09/2015.
- Author
- Ira Naidu
- Language
- English
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