Blood — Paper 2 · IGCSE Biology (9-1) 0970

18 During the process of blood clotting, damage to blood vessels stimulates L, and M is converted to N. What are L, M and N? L M N A fibrin platelets fibrinogen B fibrinogen platelets fibrin C platelets fibrin fibrinogen D platelets fibrinogen fibrin

1 marks

Answer: D

This question in 0970/21 May/June 2018

13 What is the result of a diet lacking iron? A bleeding gums B poor wound healing C reduced number of red blood cells D weak bones and teeth

1 marks

Answer: C

This question in 0970/22 Oct/Nov 2018

20 The diagram shows one way the body defends itself against pathogens. bacteria white blood cell What is the name of this defence mechanism? A antibody production B egestion C phagocytosis D vaccination

1 marks

Answer: C

This question in 0970/21 May/June 2019

19 When a pathogen enters the blood, the immune system uses different mechanisms to destroy the pathogen. The diagram shows one of these mechanisms. X Y pathogen Which row describes the structures involved? structure X X is made by structure Y A antigen lymphocytes antibody B antigen phagocytes antibody C antibody lymphocytes antigen D antibody phagocytes antigen

1 marks

Answer: C

This question in 0970/21 May/June 2020

18 The diagrams show four components of blood. Which component produces antibodies? A B C D

1 marks

Answer: B

This question in 0970/22 Oct/Nov 2020

20 The photomicrograph shows human blood. Which blood component makes antibodies? B A C D

1 marks

Answer: C

This question in 0970/21 May/June 2021

35 The graph shows the percentage of different blood groups in a human population. 40 30 percentage in 20 the population 10 0 A B AB O blood group Which type of variation is shown by human blood groups? A continuous variation caused by genetic and environmental factors B continuous variation caused by genetic factors only C discontinuous variation caused by genetic and environmental factors D discontinuous variation caused by genetic factors only

1 marks

Answer: D

This question in 0970/21 May/June 2021

18 Which component of blood produces antibodies? A lymphocytes B phagocytes C plasma D red blood cells

1 marks

Answer: A

This question in 0970/22 Oct/Nov 2021

19 The graph shows the response of the body to vaccination. X concentration in the blood time vaccination Which word should be used to replace the letter X, to complete the label on the y-axis? A antibody B antigen C pathogen D platelet

1 marks

Answer: A

This question in 0970/21 May/June 2022

13 The table shows some different components in a balanced diet. Which row correctly matches the components to the reasons why they are needed? vitamin D water fats A insulation bone growth to make haemoglobin B bone growth transport insulation C transport to make haemoglobin bone growth D to make haemoglobin insulation transport

1 marks

Answer: B

This question in 0970/22 May/June 2022

18 The flow diagram shows stages in blood clotting. components of blood vessel walls blood loss are damaged component X blood involved in component Y and is converted to clotting circulate forms a mesh pathogen component Y the body entry stops What is component X? A fibrin B fibrinogen C plasma D platelet

1 marks

Answer: B

This question in 0970/22 May/June 2022

18 The photomicrograph shows some different types of blood cell. X What is the function of the cell labelled X? A clotting blood B phagocytosis C producing antibodies D transporting oxygen

1 marks

Answer: B

This question in 0970/22 Oct/Nov 2022

13 The haemoglobin concentration in the blood of a person is 80 g / dm3. The accepted normal concentration is 120 g / dm3 or above. Which substance may be lacking in their diet? A calcium B fats C fibre D iron

1 marks

Answer: D

This question in 0970/21 May/June 2023

18 The photomicrograph shows some blood cells. P What is the function of cell P? A It carries carbon dioxide. B It carries oxygen. C It helps to clot blood. D It produces antibodies.

1 marks

Answer: D

This question in 0970/22 Oct/Nov 2023

20 When a pathogen enters the blood, the immune system uses different mechanisms to destroy the pathogen. The diagram shows one of these mechanisms. X Y pathogen Which row describes the structures involved? structure X X is made by structure Y A antigen lymphocytes antibody B antigen phagocytes antibody C antibody lymphocytes antigen D antibody phagocytes antigen

1 marks

Answer: C

This question in 0970/22 Oct/Nov 2023

15 The diagram shows a villus. 1 2 3 4 Which parts transport glucose and fatty acids away from the villus? glucose fatty acids A 3 1 B 3 2 C 4 3 D 4 4

1 marks

Answer: C

This question in 0970/22 Oct/Nov 2024