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

CH1 - CELL STRUCTURE

Fig. 1.1 shows the outline of a ciliated cell from the human gas exchange system.(a) (i) Inside the ciliated cell in Fig. 1.1, draw the nuclear envelo...

2009 Summer

2

Theory

CH18 - BIODIVERSITY, CLASSIFICATION AND CONSERVATION

(a) The table below gives some terms that are used in ecology and their definitions. Complete the table.termdefinitionecosystemall the organisms and t...

2009 Summer

2

Theory

CH4 - CELL MEMBRANES AND TRANSPORT

(a) With reference to Fig. 3.1 and the information above, explain how flatworms survive without a transport system for respiratory gases. ...............

2009 Summer

2

Theory

CH6 - NUCLEIC ACIDS AND PROTEIN SYNTHESIS

(a) With reference to Fig. 4.1,(i) nameprocess A ..............................................................molecule B ...............................

2009 Summer

3

Theory

CH7 - TRANSPORT IN PLANTS

Fig. 5.1 shows part of a transverse section of a leaf.   (a) Explain, in terms of water potential, how water moves from Q to R. [4] (b)...

2009 Summer

2

Theory

CH5 - THE MITOTIC CELL CYCLE

(a) Fig. 6.1 is an electron micrograph of a cancer cell in the process of dividing by mitosis. The stage of mitosis visible in Fig. 6.1 is metaphase.S...

2009 Summer

3

Theory

CH1 - CELL STRUCTURE

Yeast cells contain enzymes, which catalyse the breakdown of glucose to produce ethanol and carbon dioxide. These products change the environment of t...

2009 Summer

2

Theory

CH1 - CELL STRUCTURE

J1 is a slide of a stained transverse section of a plant organ.(a) Draw a large, low power, plan diagram of a quarter of the specimen as shown in Fig....

2009 Summer

1

Theory

CH1 - CELL STRUCTURE

(a) (i) Using the information in Table 1.1, decide which other concentrations to make and complete Table 1.2 including the concentrations from Table 1...

2009 Summer

2

Theory

CH1 - CELL STRUCTURE

K1 is a slide of a stained transverse section of a plant organ.(a) (i) Draw a large, low power plan diagram of one end of the specimen on K1 as shown ...

2009 Summer

3