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

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

Which characteristic is shown when a person smells a gas in the air?

2011 Summer

2

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows four arthropods. How many of these arthropods are insects?

2011 Summer

2

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

An organism has dry scales covering its body.To which vertebrate group does it belong?

2011 Summer

3

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows an animal. Use the key to identify the animal.1 has legs ...................................... go to 2 has no legs .................

2011 Summer

4

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows four specialised cells. Which feature is not common to all of these cells?

2011 Summer

1

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows a plant cell.Which labelled structures are found in plant cells but not in animal cells?

2011 Summer

5

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows another plant cell. Which feature shows that it is a palisade cell?

2011 Summer

1

MCQ

CH6 - PLANT NUTRITION

Which structures are adapted for supporting a plant?

2011 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which describes the structure and function of a red blood cell? [Table_1]

2011 Summer

2

MCQ

CH3 - MOVEMENT IN AND OUT OF CELLS

Boiling potatoes destroys their cell membranes. A peeled, boiled potato strip is placed in a concentrated solution of salts. What takes place?

2011 Summer

1