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

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

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

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

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

Theory

CH1 - CELL STRUCTURE

(a) Fig. 1.1 shows a simple apparatus that can be used to identify the tissue that conducts water up a stem. A cut shoot was placed in dye solution. A...

2009 Summer

Theory

CH1 - CELL STRUCTURE

(a) A species of snail is found in a variety of habitats. The shells of these snails may have dark bands on the surface of the shell (banded) or may n...

2009 Summer

Theory

CH1 - CELL STRUCTURE

(a) (i) Suggest why a continuous culture system was used to test the growth rate of this yeast...........................................................

2009 Summer

MCQ

CH1 - CELL STRUCTURE

Which cell structure can be seen only with an electron microscope?

2009 Winter

MCQ

CH1 - CELL STRUCTURE

A lymphocyte has a diameter of $1 \times 10^{-2}$ millimetres (mm).What is the diameter in nanometres (nm)?

2009 Winter

MCQ

CH1 - CELL STRUCTURE

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

2011 Summer

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

MCQ

CH1 - CELL STRUCTURE

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

2011 Summer

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

MCQ

CH1 - CELL STRUCTURE

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

2011 Summer

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

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

MCQ

CH2 - BIOLOGICAL MOLECULES

Which set of statements correctly describes haemoglobin?

2011 Summer

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

MCQ

CH2 - BIOLOGICAL MOLECULES

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

2011 Summer