Hydrogen ions (H+)

Question 1

What is pH

Answer 1

The concentration of H+ in a solution determines the pH

Question 2

Hydrogen ions are what subatomic particles

Answer 2

protons

Question 3

there is an inverse relationship between the pH value and the hydrogen ion concentration

The more H+ ions present, the ……the pH (the more ………… the solution)

The fewer H+ ions present, the ……….the pH (the more … the solution)

Answer 3

lower

acidic

higher

alkaline

Question 4

The concentration of H+ is therefore very important for what reactions

Answer 4

enzyme-controlled reactions, which are all affected by pH

Question 5

The fluids in the body normally have a pH value of approximately 7.4
The maintenance of this normal pH is essential for

changes in pH has what effect on enzymes

Answer 5

many of the metabolic processes that take place within cells
Changes in pH can affect enzyme structure

Question 6

For example, abnormal levels of hydrogen ions can interact with the side-chains of amino acids and change the ….

Answer 6

secondary and tertiary structures of the proteins that make up enzymes

This can cause denaturation of enzymes