Theory

CH16 - REPRODUCTION

What crosses the placenta from fetal blood to maternal blood in larger quantities than from maternal blood to fetal blood? A amino acids B carbon di...

2009 Summer

Theory

CH16 - REPRODUCTION

Fruits can be dispersed by animals or by wind. The table contains descriptions of four fruits. Which fruit will be dispersed by wind?  

2009 Summer

Theory

CH16 - REPRODUCTION

The experiment shown in the diagram was set up to see what conditions are needed for seeds to germinate. Except for tube number 5, all tubes are kept ...

2009 Summer

Theory

CH16 - REPRODUCTION

How does the rhythm method of family planning work?A. A physical barrier stops sperms reaching the egg.B. Implantation is prevented.C. Intercourse is ...

2009 Winter

Theory

CH16 - REPRODUCTION

The diagram shows a flower in section.Where will fertilisation occur?[Image of flower]

2009 Winter

Theory

CH16 - REPRODUCTION

The graph shows the changes in the dry masses of two similar samples of seeds from the start of germination.What causes the change in dry mass after d...

2009 Winter

Theory

CH16 - REPRODUCTION

The diagram shows a bean seed when planted and the same seed two days later. Which conditions are necessary for these changes to occur? [Table_1] ...

2009 Winter

Theory

CH16 - REPRODUCTION

The diagram shows a flower in section. Where will fertilisation occur?

2009 Winter

Theory

CH16 - REPRODUCTION

The diagram shows a bean seed when planted and the same seed two days later. Which conditions are necessary for these changes to occur?[Table_1]

2009 Winter

Theory

CH16 - REPRODUCTION

The graph shows the changes in the dry masses of two similar samples of seeds from the start of germination. What causes the change in dry mass aft...

2009 Winter

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram illustrates some of the processes carried out by living organisms. Which characteristic of living organisms is represented by arrow X? ...

2015 Summer

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

What is a correct way of naming a species, according to the binomial system? A. Homo sapiens B. Homo Sapiens C. human being D. sapiens

2015 Summer

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows four arthropods.[Image_1: Diagram of Pediculus ×20, Anopheles ×10, Dermacentor ×7, Carcinus ×0.5]How many of these arthropods ar...

2015 Summer

Theory

CH4 - BIOLOGICAL MOLECULES

The key can be used to distinguish between four different chemical substances. Use the key to identify which substance could be a protein. 1 contain...

2015 Summer

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows two guard cells from a leaf.Which labelled part would also be found in liver cells?

2015 Summer

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows part of a leaf in cross-section.Structures X and Y are both part of the sameA. cell.B. organ.C. tissue.D. vessel.

2015 Summer

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows a plant cell. Which features show that it is a plant cell?A It has a cell wall and a vacuole.B It has a nucleus and cytoplasm.C It h...

2015 Summer

Theory

CH8 - TRANSPORT IN PLANTS

In a section through a plant, a student found a group of long, microscopic structures. The structures lacked end walls, cytoplasm and nuclei.Which ide...

2015 Summer

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows a specialised cell cut in half. What does this diagram indicate about the structure of this cell?A The cell has a cell wall.B The ...

2015 Summer

Theory

CH6 - PLANT NUTRITION

How do carbon dioxide and oxygen move in and out of a mesophyll cell?A. active transportB. diffusionC. respirationD. transpiration

2015 Summer