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Interactive Grade 10 Science Homeostasis & Excretion Worksheet

Science · Grade 10 · 15 questions

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Homeostasis & Excretion

A patient is diagnosed with diabetes insipidus, a condition where the posterior pituitary fails to produce sufficient ADH. Which set of symptoms would you expect?

A.Production of large volumes of dilute urine and constant thirstB.Production of small volumes of concentrated urine and reduced thirstC.Elevated blood glucose levels and glucose in the urineD.Retention of excess water leading to swelling of tissues

Which statement correctly explains why urea, rather than ammonia, is excreted by humans?

A.Urea requires less water to excrete than ammonia, making it more suitable for terrestrial lifeB.Ammonia is less toxic than urea and is converted to make it more harmful before excretionC.Urea is produced directly from glucose breakdown, making it more efficientD.Ammonia cannot be filtered by the glomerulus, so it must first be converted to urea

How does the body use glucagon to restore normal blood glucose levels when they fall below the set point?

A.Glucagon stimulates beta cells to release more insulin to help cells absorb glucoseB.Glucagon signals liver cells to break down glycogen into glucose and release it into the bloodC.Glucagon directly converts fat into glucose in muscle cellsD.Glucagon reduces the rate of cellular respiration so less glucose is consumed

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