Theory

CH11 - GAS EXCHANGE IN HUMANS

Gaseous exchange takes place while air flows in and out of the lungs.(a) State three ways in which inspired air is different from expired air.1. ........

2009 Winter

2

Theory

CH11 - GAS EXCHANGE IN HUMANS

Table 4.1 shows the percentage of each of the gases present in the atmosphere and in expired air.[Table_1](a) Identify gas X.............................

2012 Winter

2

Theory

CH11 - GAS EXCHANGE IN HUMANS

Table 4.1 shows the percentage of each of the gases present in the atmosphere and in expired air.\[ \text{Table 4.1} \]\[ \begin{array}{|c|c|c|} \hlin...

2012 Winter

1

Theory

CH11 - GAS EXCHANGE IN HUMANS

Fig. 2.1 shows a section through the human chest (thorax).(a) Name the structures labelled M, N and O.M .................................................

2011 Winter

2

Theory

CH11 - GAS EXCHANGE IN HUMANS

(a) Name the structures labelled M, N and O. M .........................................................................................................

2011 Winter

1

Theory

CH11 - GAS EXCHANGE IN HUMANS

(a) The air which is inhaled is different from that which is exhaled.Complete the following sentences about these differences.(i) Inhaled air has more...

2010 Summer

3

Theory

CH11 - GAS EXCHANGE IN HUMANS

Inspired air has a different composition to expired air.Complete Table 2.1 to show how inspired air is different from expired air.Table 2.1| substance...

2013 Winter

1

Theory

CH11 - GAS EXCHANGE IN HUMANS

(a) Complete the word equation for aerobic respiration.glucose + oxygen ⟶ ...................... + ...................... + energy(b) The rate of me...

2013 Summer

2

Theory

CH11 - GAS EXCHANGE IN HUMANS

(a) On Fig. 3.1 use label lines to identify:a bronchiole;the larynx;the trachea.(b) Fig. 3.2 shows:a group of alveoli and the capillaries surrounding ...

2015 Summer

1

Theory

CH11 - GAS EXCHANGE IN HUMANS

(a) Fig. 5.1 shows the human breathing system.Name the structures labelled J, K, L and M.Write your answers on Fig. 5.1. [4](b) Fig. 5.2 shows four se...

2016 Winter

2

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows a leaf on a plant. Which characteristic of life is represented by this diagram?

2019 Summer

2

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows how Homo sapiens (modern people) could have evolved from earlier ancestors. Which statement about modern people and their ancesto...

2019 Summer

3

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows an insect. What is the insect?1. insect has no wings ....................................... go to 2   insect has win...

2019 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which features are possessed by all plant cells? [Table_1]

2019 Summer

3

MCQ

CH7 - HUMAN NUTRITION

Which organ is part of the digestive system?

2019 Summer

1

MCQ

CH3 - MOVEMENT IN AND OUT OF CELLS

The diagram shows a test-tube containing clear jelly. A drop of blue ink is injected into the middle of the jelly. The blue colour of the ink sprea...

2019 Summer

1

MCQ

CH3 - MOVEMENT IN AND OUT OF CELLS

The apparatus shown was set up.Some hours later, the water in the beaker had turned blue, and the liquid in the glass tube had moved upwards.Which pro...

2019 Summer

2

MCQ

CH4 - BIOLOGICAL MOLECULES

Four solutions were tested to see whether they contained protein, starch or glucose.The colours of the solutions after the tests are recorded in the t...

2019 Summer

2

MCQ

CH4 - BIOLOGICAL MOLECULES

Small molecules are used as the basic units in the synthesis of large food molecules.Which statement is correct?

2019 Summer

3

MCQ

CH5 - ENZYMES

Which graph shows the effect of pH on enzyme activity?

2019 Summer

2