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