Chemistry for Biologists

Metabolism and energy

1. Which of the following is not a feature of collision theory?
the rate of chemical reactions increases with increasing temperatures
at high temperatures molecules have more energy than at low temperatures
the more molecules present, the faster the reaction
the reaction is faster in dilute solute solutions than in concentrated
2. Catalysts:
slow down chemical reactions
are used up in reactions
provide an alternative reaction pathway
increase the activation energy
3. Examples of anabolic reactions include:
the breakdown of lipids
the breakdown of carbohydrates
hydrolysis reactions
the build up of proteins
4. The conversion of glucose to carbon dioxide and water is an example of:
a condensation reaction
an esterification reaction
an anabolic reaction
a catabolic reaction.
5. In an exergonic reaction:
bonds being formed are the same strength as bonds being broken
energy is absorbed from the surroundings
bonds being formed are stronger than bonds being broken
energy is released to the surroundings
6. In an endergonic reaction:
bonds being formed are the same strength as bonds being broken
bonds being formed are stronger than bonds being broken
energy is absorbed from the surroundings
energy is released to the surroundings

 

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