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
the reaction is faster in dilute solute solutions than in concentrated
at high temperatures molecules have more energy than at low temperatures
the more molecules present, the faster the reaction
2. Catalysts:
slow down chemical reactions
provide an alternative reaction pathway
are used up in reactions
increase the activation energy
3. The conversion of glucose to carbon dioxide and water is an example of:
an esterification reaction
an anabolic reaction
a catabolic reaction.
a condensation reaction
4. In an exergonic reaction:
bonds being formed are the same strength as bonds being broken
energy is released to the surroundings
bonds being formed are stronger than bonds being broken
energy is absorbed from the surroundings
5. Examples of anabolic reactions include:
the breakdown of carbohydrates
hydrolysis reactions
the build up of proteins
the breakdown of lipids
6. In an endergonic reaction:
energy is absorbed from the surroundings
bonds being formed are the same strength as bonds being broken
bonds being formed are stronger than bonds being broken
energy is released to the surroundings

 

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