Fig. 1 shows a simplified route taken by blood during one complete circuit in a human body. The boxes represent structures in the circulatory system. Arrows...

Fig. 1 shows a section through the head of a diver who is descending in a training pool. The diver feels pressure in the ear because the pressure of water ou...

The diagram shows cells taken from a skin wound on two different days after a cyclist fell from a bicycle. On day 1, the edges of the wound are far apart. On...

A hospital is trialling a gene therapy for people with cystic fibrosis. Fig. 1 shows a harmless virus used as a vector. A working copy of a gene is placed in...

Fig. 1 shows a simplified dialysis machine used by a patient with kidney failure. Table 1 gives solute concentrations before the blood enters and after it le...

A midwife uses Fig. 1 to explain growth from fertilisation to birth. The diagram shows four stages but the time scale is not uniform. fertilised ovumcells di...

Fig. 1 shows the blood groups of members of one family. A laboratory tested samples of red blood cells using blood-group antibodies. The mother has blood gro...

Fig. 1 shows a section of a coronary artery during treatment for a person with chest pain. Fatty material has made the artery narrow. A surgeon has passed a ...

Fig. 1 shows a simplified diagram of the elbow region of a human arm. A student is studying how the bones of the forearm can move without rubbing directly ag...