2807506
Descrição
Quiz por beccy.booster, atualizado more than 1 year ago
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Criado por beccy.booster
quase 9 anos atrás
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Questão 1
Questão
Which of the following are prosthetic groups?
Responda
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Haem group
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Vitamin D
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Detachable metal ions
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Permanently bonded metal ions
Questão 2
Questão
What is the role of coenzymes?
Responda
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A non-protein, organic compound that is necessary for the functioning of an enzyme.
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A substance (other than the substrate) whose presence is essential for the activity of an enzyme.
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A substance that prevents the binding of the substrate to the active site.
Questão 3
Questão
How can enzymes be used to treat cystic fibrosis?
Responda
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Acid resistant coated enzymes are given in tablet form and help dissolve the food before it reaches the intestines.
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They replace faulty-non existent enzymes normally released by pancreas.
Questão 4
Questão
How does potassium cyanide cause death?
Responda
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Inhibits cell respiration. Binds to the enzyme cytochrome oxidase in mitochondria and causes lactic acid build up (due to lack of respiration)
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Interferes with the workings of the heart causing a fall in blood pressure and breaks down ATP to prevent use of energy.
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Inhibits oxidation of ubiquinol and inhibits ATP production. Forms a toxic substance called superoxide.
Questão 5
Questão
Why is penicillin used to treat bacteria?
Responda
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It inhibits an enzyme that forms cross links in bacterial cell walls.
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It inhibits mitochondria from respiring to produce ATP and halts reproduction.
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Inhibits an enzyme that allows the spindle fibres to form during cell division and replication.
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