MCQ

CH4 - CELL MEMBRANES AND TRANSPORT

The diagram shows how nicotine is transported from the blood plasma into a cell using a type of cotransporter mechanism.In the phloem tissue, there is...

2024 Summer

4

MCQ

CH4 - CELL MEMBRANES AND TRANSPORT

Which process always takes place without the involvement of energy from ATP?

2024 Summer

3

MCQ

CH4 - CELL MEMBRANES AND TRANSPORT

What is the correct range of measurements for the width of the cell surface membrane?

2024 Spring

3

MCQ

CH4 - CELL MEMBRANES AND TRANSPORT

The diagram shows the entry of molecule X into a cell. Which row shows a property of molecule X and the effect of the concentration of ATP in the cyto...

2024 Summer

3

MCQ

CH4 - CELL MEMBRANES AND TRANSPORT

A student observed the effect of two different concentrations of salt solution on blood cells.The student added each concentration of salt solution to...

2024 Summer

4

MCQ

CH4 - CELL MEMBRANES AND TRANSPORT

Where in the cell surface membrane are the carbohydrate chains of glycoproteins and glycolipids mainly located? [Table_1]

2024 Spring

3

MCQ

CH4 - CELL MEMBRANES AND TRANSPORT

The electron micrograph shows some human blood cells.Which row correctly shows the net movement of water by osmosis and the water potential of the cyt...

2024 Summer

4

MCQ

CH4 - CELL MEMBRANES AND TRANSPORT

The diagram shows part of a cell surface membrane. Which row correctly identifies the molecules labelled 1 and 2?

2024 Winter

3

MCQ

CH4 - CELL MEMBRANES AND TRANSPORT

Sodium ions can enter cells across the cell surface membrane.Which methods could be used by sodium ions to cross a cell surface membrane and enter a c...

2024 Spring

4

MCQ

CH4 - CELL MEMBRANES AND TRANSPORT

Which statement correctly describes facilitated diffusion?

2024 Summer

4

Theory

CH7 - TRANSPORT IN PLANTS

(a) The structure of a phloem sieve tube element is adapted to its function.Each of explanations A to F describes how a particular structural feature ...

2020 Spring

3

Theory

CH3 - ENZYMES

Phosphatidate phosphatase (PAP) enzymes have an important role in lipid metabolism.The reaction catalysed by PAP is shown in Fig. 2.1.Experiments were...

2020 Spring

3

Theory

CH8 - TRANSPORT IN MAMMALS

During one cardiac cycle:blood enters the heart from the lungs and from the rest of the bodyblood leaves the heart to be transported to the lungs and ...

2020 Spring

2

Theory

CH9 - GAS EXCHANGE AND SMOKING

(a) When a section of lung tissue is viewed using a light microscope, it is possible to identify the trachea, the bronchus, the bronchioles and the al...

2020 Spring

3

Theory

CH11 - IMMUNITY

Myasthenia gravis and HIV/AIDS both involve disorders of the immune system.(a) Outline why myasthenia gravis is described as a disorder of the immune ...

2020 Spring

3

Theory

CH1 - CELL STRUCTURE

Fig. 6.1 is a transmission electron micrograph of a plant parenchyma cell.(a) The external environment of the parenchyma cell has a higher water poten...

2020 Spring

3

Theory

CH14 - HOMEOSTASIS

(a) Fig. 1.1 represents part of the wall of a proximal convoluted tubule (pct) in a kidney nephron.[Image_1: Fig. 1.1](i) Name the features of the wal...

2020 Spring

1

Theory

CH11 - IMMUNITY

Severe combined immunodeficiency (SCID) is a group of life-threatening diseases. SCID is caused by mutations that prevent the normal function of the i...

2020 Spring

2

Theory

CH16 - INHERITED CHANGE

Flowers of the common morning-glory plant, Ipomoea purpurea, can have several different phenotypes. An example of these flowers is shown in Fig. 3.1.[...

2020 Spring

2

Theory

CH16 - INHERITED CHANGE

The rainbow trout, Oncorhynchus mykiss, is a fish that is bred in commercial fish farms. Rainbow trout that have a blue-silver colour are sold at a hi...

2020 Spring

1