Mary Jones and Geoff Jones Solutions for Chapter: Reproduction in Humans, Exercise 4: End-of-chapter questions

After the baby is born, it's main source of food is milk. Give two advantages of feeding a baby on breast milk rather than using milk prepared from milk powder.

The diagram shows a human sperm.

The diagram shows a human sperm. With reference to the diagram, explain how the structure of a sperm adapts it for its function.

The diagram shows a human sperm. Describe how a human egg cell is adapted for its function.

The graph shows the number of people in the Caribbean who were known to be infected with HIV, who had AIDS and who died from AIDS, between $1982$ and $2008$. With reference to the graph, describe the changes in the number of people infected with HIV between 1982 and 2008.With reference to the graph, describe the changes in the number of people infected with HIV between $1982$ and $2008$.

The graph shows the number of people in the Caribbean who were known to be infected with HIV, who had AIDS and who died from AIDS, between $1982$ and $2008$. Suggest why the actual number of people infected with HIV may be greater than the numbers shown on the graph.

The graph shows the number of people in the Caribbean who were known to be infected with HIV, who had AIDS and who died from AIDS, between $1982$ and $2008$. Explain how infection with HIV leads to the symptoms of AIDS.

The graph shows the number of people in the Caribbean who were known to be infected with HIV, who had AIDS and who died from AIDS, between $1982$ and $2008$. Suggest the reasons for the shape of the graphs between $2004$ and $2008$.