Maintaining Water & Nitrogen Balance in the Body (AQA GCSE Biology): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
What is osmosis?
What is osmosis?
Movement of water from high to low concentration
What happens to cells if blood water concentration increases?
What happens to cells if blood water concentration increases?
Cells take up water and expand
What happens to cells if blood water concentration decreases?
What happens to cells if blood water concentration decreases?
Cells shrink as they lose water
Which useful substances do kidneys selectively reabsorb?
Which useful substances do kidneys selectively reabsorb?
Glucose, ions and water
What happens to amino acids in the liver?
What happens to amino acids in the liver?
Deaminated to form ammonia
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 permeability to water
What type of urine is produced when ADH levels increase?
What type of urine is produced when ADH levels increase?
Smaller volume, more concentrated yellow
Why is ADH control an example of negative feedback?
Why is ADH control an example of negative feedback?
ADH secretion reverses blood concentration change
How often and for how long must dialysis be done?
How often and for how long must dialysis be done?
3 times a week for 3-4 hours
What surrounds the blood in dialysis?
What surrounds the blood in dialysis?
Dialysis fluid with same concentration as blood
What is an advantage of kidney transplants over dialysis?
What is an advantage of kidney transplants over dialysis?
Cheaper overall cost
What drugs reduce the chance of kidney transplant rejection?
What drugs reduce the chance of kidney transplant rejection?
Immunosuppressant drugs