Maintaining Water & Nitrogen Balance in the Body (OCR GCSE Biology A (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is osmosis?
What is osmosis?
Water moving from high to low concentration
What happens to cells when blood water concentration increases?
What happens to cells when blood water concentration increases?
Cells expand and may burst
What happens to cells when blood water concentration decreases?
What happens to cells when blood water concentration decreases?
Cells shrink
Which substances do kidneys selectively reabsorb?
Which substances do kidneys selectively reabsorb?
Glucose, ions and water
Where are amino acids deaminated?
Where are amino acids deaminated?
In the liver
Why is ammonia converted to urea?
Why is ammonia converted to urea?
Because ammonia is toxic
When is ADH released by the pituitary gland?
When is ADH released by the pituitary gland?
When blood is too concentrated
What does ADH do to kidney tubules?
What does ADH do to kidney tubules?
Increases their permeability to water
What happens to urine when ADH levels increase?
What happens to urine when ADH levels increase?
Smaller volume, more concentrated, yellow
What concentrations does dialysis fluid have?
What concentrations does dialysis fluid have?
Same ions & glucose as healthy blood
How often must dialysis be done?
How often must dialysis be done?
Three times a week for 3-4 hours
How is kidney transplant rejection reduced?
How is kidney transplant rejection reduced?
Using immunosuppressant drugs