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 of the cell organelles will be clearly visible under the high power (×400) of the light microscope? [Table_1]

2016 Summer

3

MCQ

CH1 - CELL STRUCTURE

The drawing from an electron micrograph shows a ciliated epithelial cell, magnified \times 1500, which is found in the trachea. Line X-Y shows the wid...

2016 Summer

2

MCQ

CH1 - CELL STRUCTURE

What are correct locations of ribosomes in the typical eukaryotic cell?1. free in the cytoplasm2. attached to the outside of the endoplasmic reticulum...

2016 Summer

4

MCQ

CH1 - CELL STRUCTURE

Visking tubing is an artificial partially permeable membrane used to demonstrate diffusion. Glucose molecules can pass through the pores in the membra...

2016 Summer

3

MCQ

CH1 - CELL STRUCTURE

What are found in both chloroplasts and typical prokaryotic cells?

2016 Summer

4

MCQ

CH2 - BIOLOGICAL MOLECULES

Two solutions, 1 and 2, one containing starch and sucrose, and the other containing glucose and protein, were tested with a variety of reagents to con...

2016 Summer

3

MCQ

CH2 - BIOLOGICAL MOLECULES

X and Y are two monomers found in biological polymers.[Image: Monomers X and Y]Which monomer is found in each of cellulose, glycogen, amylopectin and ...

2016 Summer

3

MCQ

CH2 - BIOLOGICAL MOLECULES

Chitin is a polysaccharide consisting of long straight chains of the monosaccharide acetylglucosamine, linked by 1,4 glycosidic bonds.Acetylglucosamin...

2016 Summer

3

MCQ

CH2 - BIOLOGICAL MOLECULES

Which statement about triglycerides is correct?

2016 Summer

3

MCQ

CH2 - BIOLOGICAL MOLECULES

The diagrams show the structures of two amino acids, one of which has two amine (–NH₂) groups and the other has two carboxylic (–COOH) groups. ...

2016 Summer

3