Role of the Nephron in Osmoregulation (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What creates hydrostatic pressure in the glomerulus?
What creates hydrostatic pressure in the glomerulus?
Efferent arteriole is smaller than afferent
Which substances cannot pass through the filtration barrier?
Which substances cannot pass through the filtration barrier?
Blood cells and proteins
How much filtrate is produced per minute in the glomerulus?
How much filtrate is produced per minute in the glomerulus?
125 cm³
What percentage of filtrate does the PCT reabsorb?
What percentage of filtrate does the PCT reabsorb?
Nearly 85%
Why do PCT cells have high mitochondrial density?
Why do PCT cells have high mitochondrial density?
To supply ATP for active transport
What is the first step in the PCT co-transport mechanism?
What is the first step in the PCT co-transport mechanism?
Sodium ions actively transported out
Which limb of the loop of Henle is permeable to water?
Which limb of the loop of Henle is permeable to water?
Descending limb
What mechanism does the loop of Henle use to concentrate urine?
What mechanism does the loop of Henle use to concentrate urine?
Counter-current multiplier
How much water enters the nephrons daily?
How much water enters the nephrons daily?
180 dm³
What specialised proteins regulate water loss in the collecting duct?
What specialised proteins regulate water loss in the collecting duct?
Aquaporins