Excretion

13.1

What the syllabus asks of you

Describe excretion as the removal of toxic materials and the waste products of metabolism from organisms
State that carbon dioxide is a waste product of respiration, which is excreted through the lungs
State that urea is a toxic waste product produced in the liver from the breakdown of excess amino acids

Read the notes first

Chapter 13: Excretion

Drill this topic

Every question on Excretion, untimed, marked as you go.

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Choose the years and how many questions, then print it with the answers on separate pages.