EASY
Upper Secondary: IGCSE
IMPORTANT
Earn 100

Name the reagent used for testing for reducing sugars.

Important Questions on The Chemicals of Life

MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 4 - The Chemicals of Life>End-of-chapter questions>Q 2
Name the substance which the emulsion test detects.
HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 4 - The Chemicals of Life>End-of-chapter questions>Q 2
Name the form in which carbohydrate is transported in a plant.
HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 4 - The Chemicals of Life>End-of-chapter questions>Q 2
Name the term that describes all the chemical reactions taking place in an organism.
HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 4 - The Chemicals of Life>End-of-chapter questions>Q 3
Imagine that you have been given two colourless solutions. Describe how you could find out which of them contains the greater concentration of reducing sugar. You will need to think carefully about all the different variables that you would need to keep constant.
HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 4 - The Chemicals of Life>End-of-chapter questions>Q 4

Copy and complete the table below. Do not write anything in the box that is shaded grey.

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HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 4 - The Chemicals of Life>End-of-chapter questions>Q 5
A sample of DNA was tested to find out which bases were present. It was found that 30% of the bases in the DNA were T. What percentage of the bases in the DNA would you expect to be A? Explain your answer.
HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 4 - The Chemicals of Life>End-of-chapter questions>Q 5
A sample of DNA was tested to find out which bases were present. It was found that 30% of the bases in the DNA were T. What percentage of the bases in the DNA would you expect to be C? Explain your answer.
HARD
Upper Secondary: IGCSE
IMPORTANT
Cambridge IGCSE® Biology Coursebook Third Edition>Chapter 4 - The Chemicals of Life>End-of-chapter questions>Q 5
A sample of DNA was tested to find out which bases were present. It was found that 30% of the bases in the DNA were T. Explain why two organisms that have different sequences of bases in their DNA may look different from each other.