GCSE Biology – Exchange and Transport in Animals – 1 – Exam Style Questions with Answers

Athletes often eat a high protein diet.
Which is the test and result for a food containing protein?

A student investigated respiration in three different organisms.
Red hydrogencarbonate indicator was placed in each of three test tubes.
Gauze was placed in each test tube to hold the organisms.
In test tube 1 the student placed four germinating peas.
In test tube 2 the student placed four dried peas.
In test tube 3 the student placed four mealworms.
Bungs were added to each of the test tubes.
The three test tubes were left for one hour.
The equipment used is shown in Figure 16.
How was the carbon dioxide produced in this investigation?

How does oxygen move across the alveolar membrane into the capillary?

Bloodworms in a pond indicate that the water is polluted.
Which species also indicates that the water is polluted?

Smoking can cause a condition called emphysema.
Figure 3 shows alveoli from a person with emphysema.
The surface area of the alveoli will affect how much oxygen moves into the blood
by the process of .........................................................

Figure 10 shows a single-celled pond organism (Amoeba proteus).
Which row of the table allows the net diffusion of oxygen into Amoeba proteus?

Smoking can cause a condition called emphysema.
Figure 3 shows alveoli from a person with emphysema.
The alveoli from the person with emphysema have a………………….. surface area than the alveoli from a healthy lung.