Mary Jones and Geoff Jones Solutions for Chapter: Excretion, Exercise 3: End-of-chapter questions

Author:Mary Jones & Geoff Jones

Mary Jones Biology Solutions for Exercise - Mary Jones and Geoff Jones Solutions for Chapter: Excretion, Exercise 3: End-of-chapter questions

Attempt the practice questions on Chapter 12: Excretion, Exercise 3: End-of-chapter questions with hints and solutions to strengthen your understanding. Cambridge IGCSE® Biology Coursebook Third Edition solutions are prepared by Experienced Embibe Experts.

Questions from Mary Jones and Geoff Jones Solutions for Chapter: Excretion, Exercise 3: End-of-chapter questions with Hints & Solutions

HARD
Upper Secondary: IGCSE
IMPORTANT

Copy and complete these sentences, using some of the words in the list. You may use each word once, more than once or not at all.

Absorption, amino acids, digestion, dioxide, fatty acids, ingestion, kidneys, liver, lungs, metabolism, monoxide, respiration, stomach, urea, urine, waste products

Excretion involves the removal of _______ ________ of _______ from the body. Carbon _______ is produced by all cells during _____ and is excreted by the ______. Urea is produced in the ______ from excess _______ _______ and is excreted by the ________, dissolved in water to form ____.

 

HARD
Upper Secondary: IGCSE
IMPORTANT

Explain the difference between each of the following pairs of terms.

  1. Excretion and egestion.

HARD
Upper Secondary: IGCSE
IMPORTANT

The diagram represents several different types of molecules in solution separated by a membrane.

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(a) State which letter represents a water molecule.

HARD
Upper Secondary: IGCSE
IMPORTANT

The diagram represents several different types of molecules in solution separated by a membrane.

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(b) State the type of membrane shown in the diagram.

MEDIUM
Upper Secondary: IGCSE
IMPORTANT

The diagram represents several different types of molecules in solution separated by a membrane.

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(b) Explain the processes by which molecules move through the membrane.

MEDIUM
Upper Secondary: IGCSE
IMPORTANT

The diagram below shows what happens during filtration in the glomerulus of a kidney.

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(d) Name the molecules that pass out of the blood plasma.

HARD
Upper Secondary: IGCSE
IMPORTANT

The diagram below shows what happens during filtration in the glomerulus of a kidney.

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Explain how filtration differs from the processes of which molecules move through the membrane? 

HARD
Upper Secondary: IGCSE
IMPORTANT

The diagram below shows what happens during filtration in the glomerulus of a kidney.

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(f) Explain what happens to molecules in the filtrate before urine leaves the kidney.