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

A cell organelle measures $4 \times 10^{-1}$ mm in diameter.What is the diameter in $\mu$m?

2011 Summer

2

MCQ

CH1 - CELL STRUCTURE

In the following table, which is the correct comparison between light and electron microscopes? [Table_1: light microscope and electron microscope co...

2011 Summer

3

MCQ

CH1 - CELL STRUCTURE

Which structures are present in a typical plant cell? [Table_1]

2011 Summer

3

MCQ

CH1 - CELL STRUCTURE

Plant cells are stained and then viewed through a light microscope.Which structures would be clearly visible at a magnification of ×400?

2011 Summer

2

MCQ

CH1 - CELL STRUCTURE

Which type of cell will contain the highest proportion of single membrane-bound structures?

2011 Summer

3

MCQ

CH2 - BIOLOGICAL MOLECULES

Four different fruit juices, A, B, C and D, were tested with Benedict's solution. A second sample of each juice was hydrolysed and tested with Benedic...

2011 Summer

1

MCQ

CH2 - BIOLOGICAL MOLECULES

Which molecular bonds will be broken by hydrolysis when a molecule of glycogen is converted to glucose? [Table_1]

2011 Summer

2

MCQ

CH2 - BIOLOGICAL MOLECULES

Which set of statements correctly describes haemoglobin?

2011 Summer

2

MCQ

CH2 - BIOLOGICAL MOLECULES

Some foods contain 'hydrogenated vegetable oils'. These are unsaturated fats that have been converted to saturated fats.Which property of the fats wil...

2011 Summer

2

MCQ

CH2 - BIOLOGICAL MOLECULES

Which rows show the chemical groups present in the biological molecules listed?[Table_1]

2011 Summer

2