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Cells 5

Bioenergetics & Enzymes

QuestionAnswer
cells create organisation from raw materials in the environment, they also contribute to disorder in the environment by releasing _____________. Heat
A prosthetic group is the part of an enzyme that: A cofactor that is permanently bound to the enzyme
Some bacteria are metabolically active in hot springs because: their enzymes have high optimal temperatures.
The role of an enzyme in an enzyme catalysed reaction is to: Increase the rate at which the substrate is converted into product
Which of the following molecules is NOT classified as a vitamin but does require the ingestion of a vitamin for its production? retinal
Enzyme activity can be regulated by allosteric inhibitors True
Biological oxidation-reduction reactions always involve Transfer of electrons
A molecule that gives up electrons is Oxidized
Which of the following mechanisms best describes the manner in which lysozyme lowers the energy required for its substrate to reach its transition state conformation? by altering the shape of the substrate to mimic the conformation of the transition state
The main difference between a catalysed and an un-catalysed reaction is that: The activation energy of the catalysed reaction is lower
Reduction is a chemical reaction where a molecule gains electrons True
Two enzymes with a similar structure are likely to have: Evolved from a common ancestor
Active site of an enzyme binds a substrate True
Oxidation is a chemical reaction where a molecule gains electrons False
The specific subset of these reactions that breakdown nutrients in food can be described as _____________. catabolic
Created by: Weybz13