ATP and Inorganic Ions

Question 1

What are the 4 Inorganic Ions

Answer 1

Sodium - Co-transport of glucose and amino acids across cell membranes

Iron - Component of haemoglobin which transports oxygen

Hydrogen - Important in determining pH and thus affecting protein structure and enzyme activity

Phosphate - Important as a structural component of DNA, RNA and ATP

Question 2

Describe the Hydrolysis of ATP

Answer 2

• the hydrolysis of ATP is catalysed by ATP Hydrolase and produces ADP and an Inorganic Phosphate
• Also releases energy which is used for things like protein-synthesis, active transport, cell division etc.

Question 3

What is ATP and what is it made of

Answer 3

• the immediate energy source for biological processes used by cells
• made from a molecule of ribose, a molecule of adenine and three phosphate groups

Question 4

What can the Inorganic Phosphate formed from the hydrolysis of ATP be used for?

Answer 4

• Pi can be used to phosphorylate other compounds making them more reactive

Question 5

Describe the Condensation of ATP

Answer 5

• the condensation of ADP and Pi is catalysed by the enzyme ATP Synthase and produces ATP which requires energy from respiration/photosynthesis
• ATP is continuously recycled into ADP and Pi and vice-versa