Excretion and the kidney Quiz
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5 questions, one answer each
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1. Which organ makes urea?
- A. Kidney
- B. Bladder
- C. Liver
- D. Skin
2. Which waste substance is excreted by the lungs?
- A. Carbon dioxide
- B. Urea
- C. Glucose
- D. Protein
3. Which of these is NOT excreted by the skin in sweat?
- A. Water
- B. Salts
- C. A little urea
- D. Protein
4. What happens in the kidneys when a person has lost a lot of water by sweating?
- A. More water is reabsorbed and little urine is made
- B. Less water is reabsorbed and a lot of urine is made
- C. The kidneys stop filtering the blood
- D. Urea is no longer removed from the blood
5. Which description of urine from a healthy person is correct?
- A. It contains protein and glucose
- B. It contains urea, water and salts
- C. It contains only water
- D. It contains red blood cells