Multiple Choice (science nº1)

Which pair of features is found in plant cells but not in animal cells?

The diagram shows a small part of a plant cell greatly magnified. Which part controls what enters and leaves the cell?

When an enzyme molecule has catalysed a chemical reaction in a cell, what happens to it?

There are four stages in testing a leaf for starch. 1 soften in hot water 2 stain with iodine 3 boil in alcohol 4 boil in water What is the correct order for these stages?

The diagram shows some cells in a leaf of a green plant. In which layer of cells does most photosynthesis occur?

The diagram shows a section through a human tooth. Which part is made of the hardest material?

The pie-charts show the compositions of four different foods. Which food contains the most energy?

The diagram shows apparatus that can be used to demonstrate that the air breathed out by a person contains more carbon dioxide than the air breathed in. The person breathes in and out at X. Where does air enter and leave the apparatus?

Which cells destroy harmful microorganisms in the blood?

The diagram shows part of the human circulatory system. Which structure carries oxygenated blood?

The drawing shows a plant in a container of water. There is a layer of oil on top of the water that stops the water evaporating. The apparatus weighs 300 g. After two hours it weighs 296 g. What is the rate of transpiration?

Which organ releases insulin when the blood sugar level is too high?

The diagram shows a section through a flower Where do the following occur?

Which process takes place when a sperm joins with an ovum?

Which diagrams show the bonding in the molecules of nitrogen and ethene?

The reaction of zinc and sulphur to form zinc sulphide is exothermic. Which information in the table is correct?

Which substance is an ionic compound?

Bromine is in the same group of the Periodic Table as chlorine. What are the colour and formula of hydrobromic acid likely to be?

Which equation shows an insoluble base reacting with an acid?

Flame tests are carried out on calcium chloride and copper (II) chloride. What are the colours of the flames?

In an experiment, 100 cm3 of dry air are passed over heated copper turnings until there is no further change in volume (at r.t.p.). What volume of gas remains?

A mixture of copper, magnesium and zinc is added to an excess of dilute sulphuric acid. The resulting mixture is then filtered. What is the solid left behind?

Which statement best describes how and why drinking water is sterilised?

In which experiment does the metal act as a catalyst?

The diagram shows an experiment to investigate the effect of heat on potassium nitrate. The glowing splint bursts into flame. What happens to the potassium nitrate when it is heated?