Inorganic Ions in Biological Processes (OCR A-Level Biology A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What may happen to an enzyme without its specific cofactor?
What may happen to an enzyme without its specific cofactor?
Tertiary structure not maintained
What role do calcium ions play in muscle contraction?
What role do calcium ions play in muscle contraction?
Interact with troponin to expose actin sites
How do sodium ions contribute to nerve transmission?
How do sodium ions contribute to nerve transmission?
Move across axon membrane during action potentials
What happens when potassium ions accumulate in plant guard cells?
What happens when potassium ions accumulate in plant guard cells?
Cells become turgid and stomata open
How are hydrogen ions involved in ATP formation during chemiosmosis?
How are hydrogen ions involved in ATP formation during chemiosmosis?
Move through ATP synthase to phosphorylate ADP
Why do plants absorb nitrate ions from the soil?
Why do plants absorb nitrate ions from the soil?
To manufacture amino acids and proteins
Which enzyme catalyzes the formation of hydrogen carbonate ions in red blood cells?
Which enzyme catalyzes the formation of hydrogen carbonate ions in red blood cells?
Carbonic anhydrase
What is the purpose of the chloride shift in red blood cells?
What is the purpose of the chloride shift in red blood cells?
Maintain electrical neutrality
Which structure contains phosphate ions?
Which structure contains phosphate ions?
ATP, DNA, phospholipids and bones
How much energy is released when ATP is hydrolysed to ADP and inorganic phosphate?
How much energy is released when ATP is hydrolysed to ADP and inorganic phosphate?
30.5 kJ·mol⁻¹