Theory

CH5 - ENZYMES

(a) All organisms depend on enzymes.Define the term enzyme and describe the function of enzymes in living organisms......................................

2012 Summer

1

Theory

CH5 - ENZYMES

The enzyme lactase digests lactose into simple sugars.(a) Define the term _enzyme_.......................................................................

2013 Winter

1

Theory

CH5 - ENZYMES

(a) Enzymes are biological catalysts. (i) Define the term catalyst. [2] (ii) What are enzymes made of? Choose your answer from the list. carb...

2014 Summer

1

Theory

CH5 - ENZYMES

(a) Complete the following paragraph about enzymes. Choose words from this list. Use each word only once or not at all.activators catalysts enzymespro...

2015 Summer

3

Theory

CH5 - ENZYMES

(a) Catalase is an enzyme that catalyses the breakdown of hydrogen peroxide into water and oxygen.The effect of temperature on catalase activity was i...

2018 Winter

3

Theory

CH5 - ENZYMES

(a) Fig. 5.1 shows a diagram of part of the alimentary canal and associated structures.Fig. 5.1(i) State the ...

2018 Winter

3

Theory

CH5 - ENZYMES

(a) Pectinase is an enzyme that is used in the production of apple juice. A student investigated how pH affected the volume of apple juice produced wh...

2020 Winter

2

Theory

CH5 - ENZYMES

(a) (i) State the type of respiration in yeast that produces ethanol.....................................................................................

2018 Winter

2

Theory

CH5 - ENZYMES

(a) (i) The box on the left shows the beginning of a sentence. The boxes on the right show some sentence endings. Draw three straight lines to make th...

2022 Winter

2

Theory

CH5 - ENZYMES

(a) (i) The box on the left shows the beginning of a sentence.The boxes on the right show some sentence endings.Draw two straight lines from ‘Excret...

2020 Winter

2

MCQ

CH7 - HUMAN NUTRITION

Why does the energy needed by a human increase during the first ten years of life?

2014 Summer

1

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

Which feature is characteristic of both annelids and arthropods?

2014 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which features do animal cells share with plant cells?[Table_1]

2014 Summer

1

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows an animal. Use the key to identify the animal.1. wings present ......................... go to 2    wings absent...

2014 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which pair of statements about a plant cell is correct? [Table_1: outer surface of the cell, position of sap vacuole]

2014 Summer

1

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows a cell. Which structure is not present?

2014 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows a section through a root. What are the levels of organisation of the labelled structures?

2014 Summer

1

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which structures contain a cell nucleus?Red Blood Cell | Root Hair Cell | Xylem VesselA | ✔ | ✔ | ✔B | ✔ | ✘ | ✘C | ✘ | ✔ | ✘D | ✘...

2014 Summer

2

MCQ

CH3 - MOVEMENT IN AND OUT OF CELLS

The diagram shows a cell.Which type of cell does the diagram show?

2014 Summer

1

MCQ

CH3 - MOVEMENT IN AND OUT OF CELLS

Two identical cylinders, 40 mm long, are cut from a potato. One (W) is placed in water and the other (X) is placed in a concentrated sugar solution. W...

2014 Summer

1