MCQ

CH3 - ENZYMES

Which row describes the expected effect on $V_{max}$ and $K_m$ when a competitive reversible inhibitor is added to an enzyme-catalysed reaction? [Tab...

2024 Summer

1

MCQ

CH3 - ENZYMES

What is the correct order of locations in the cell for the production of an extracellular enzyme?

2024 Summer

3

MCQ

CH3 - ENZYMES

The graph shows the effect of substrate concentration on the rates of reaction of three enzymes, X, Y, and Z.What is the correct order of affinity of ...

2024 Summer

1

MCQ

CH3 - ENZYMES

Many flowers produce a sweet solution called nectar. Bees provided with nectar use enzyme Q to change the nectar into honey. After testing a sample of...

2024 Spring

4

MCQ

CH3 - ENZYMES

The graph shows the trend from an enzyme-catalysed reaction. Which labels are correct for the x-axis and y-axis?[Table_1]

2024 Summer

2

MCQ

CH3 - ENZYMES

A student carried out investigations at pH 1–8 to look at the effect of pH on an enzyme-catalysed reaction.The optimum condition for this enzyme is ...

2024 Winter

3

MCQ

CH3 - ENZYMES

Which statements about the Michaelis–Menten constant ($K_m$) are correct?1. The higher the $K_m$, the higher the enzyme affinity for the substrate.2...

2024 Summer

4

MCQ

CH3 - ENZYMES

A scientist investigated the progress of two enzyme-catalysed reactions in separate test-tubes, X and Y. Both reactions result in colour changes that ...

2024 Spring

4

MCQ

CH3 - ENZYMES

Which statement is correct for a non-competitive inhibitor?

2024 Winter

3

MCQ

CH3 - ENZYMES

Pyrophosphatase enzymes catalyse a hydrolysis reaction.In experiment 1, a scientist studied the rate of this reaction, using a colorimeter.The absorba...

2024 Winter

1

MCQ

CH1 - CELL STRUCTURE

Which organelles are enclosed in a single phospholipid bilayer and contain hydrolytic enzymes?

2017 Summer

3

MCQ

CH1 - CELL STRUCTURE

The DNA of prokaryotes is naked and circular.Which statement describes how the DNA of eukaryotes differs from that of prokaryotes?

2017 Summer

3

MCQ

CH1 - CELL STRUCTURE

The recently discovered Pandoravirus measures 1000 nm in diameter.The Mimivirus has a diameter of 400 nm.What can be detected using a light microscope...

2017 Summer

4

MCQ

CH1 - CELL STRUCTURE

What are found in chloroplasts and mitochondria?1. DNA2. 70S ribosomes3. mRNA

2017 Summer

3

MCQ

CH1 - CELL STRUCTURE

Boiling the bones and teeth from dead animals can be used to produce a type of glue. The glue is formed from the collagen fibres present in bones and ...

2017 Summer

3

MCQ

CH1 - CELL STRUCTURE

What describes the primary structure of a protein?

2017 Summer

3

MCQ

CH2 - BIOLOGICAL MOLECULES

The diagrams show four monosaccharides with the formula $C_6H_{12}O_6$.Which diagram shows $\alpha$-glucose?

2017 Summer

2

MCQ

CH2 - BIOLOGICAL MOLECULES

Complete digestion of polysaccharides requires all the glycosidic bonds between the monomers to be broken.Amylase only breaks $\alpha$-1,4 glycosidic ...

2017 Summer

3

MCQ

CH2 - BIOLOGICAL MOLECULES

The diagram shows the results of tests on four solutions containing biological molecules. Which shows the solution that contains only starch and prote...

2017 Summer

3

MCQ

CH2 - BIOLOGICAL MOLECULES

The enzyme invertase catalyses the breakdown of sucrose to glucose and fructose.Three different enzyme inhibitors of invertase X, Y and Z were investi...

2017 Summer

4