Biology 5090/21 — May/June 2014
Cambridge O-Level · Theory · worked solutions for every part, with the mark scheme
Topics Respiration · Disease and Immunity · Organisms and Their Environment · Transport in Humans · Human Gas Exchange · Human Nutrition · +8 more
Fig. 1.1 shows a sample of human blood seen using a microscope.
Name the type of cell labelled A in Fig. 1.1. State the function of this type of cell.
type of cell ______
function
______
Use your knowledge of the structure of this type of cell to suggest why the cell labelled A in Fig. 1.1 appears to be more lightly coloured at its centre than at its edge.
Name the type of cells labelled B and C in Fig. 1.1.
B = _____
C = _____
Some diseases can cause a person to have fewer of cells B and C in the blood. Use your knowledge of how cells B and C carry out their functions to suggest a problem this may cause for a person. Give an explanation for your answer.
problem ______
explanation ______
The rest of this paper
8 more questions- Q2Human Gas Exchange · Respiration6M
- Q3Human Nutrition · Disease and Immunity12M
- Q4Cell Structure and Organisation · Movement Into and Out of Cells · Respiration12M
- Q5Organisms and Their Environment · Respiration10M
- Q6Coordination and Control · Excretion10M
- Q7Cell Division and Reproduction · Inheritance10M
- Q8Plant Nutrition · Organisms and Their Environment10M
- Q9Biotechnology and Genetic Modification10M