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1. How many jointed legs does an insect have?
A two pairs B three pairs C four pairs D more than six pairs
2. The photomicrograph shows a cell from a type of aquatic plant.
Which labelled parts indicate that this is a plant cell?
A P and R B P and S C Q and R D Q and S
3. The diagram shows a red blood cell.
The actual diameter of the cell is 7.0 micrometers.
What is the magni cation of this cell?
A ×70
B ×700
C ×7000
D ×70 000
4. Which molecule crosses a partially permeable membrane during osmosis?
A carbon dioxide B oxygen C urea D water
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5. The scienti c name for the golden eagle is Aquila chrysaetos.
What is the genus of the golden eagle?
A Aquila B chrysaetos C eagle D golden
6. The diagram shows an experiment demonstrating osmosis using a dialysis tubing bag
After 30 minutes, the level of the liquid in the glass tube goes ......1...... because the water
had a
......2...... water potential than the sugar solution.
Which words correctly complete the statement?
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7. The diagram shows the movement of glucose molecules across a cell membrane.
Which statement describes molecule T?
A It is a fat molecule used to transport glucose down a concentration gradient.
B It is a fat molecule used to transport glucose against a concentration gradient.
C It is a protein molecule used to transport glucose down a concentration gradient.
D It is a protein molecule used to transport glucose against a concentration gradient.
8. The diagram shows a root hair cell.
When does water enter the cell by osmosis?
A when the concentration of solutes outside the cell is greater than inside the cell
B when the concentration of solutes inside and outside the cell are equal
C when the water potential inside the cell is higher than outside the cell
D when the water potential outside the cell is higher than inside the cell
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9. The diameter of an egg cell from a frog is 2.5 mm.
The diameter of an egg cell from a human is 120 µm.
Which value shows approximately how many times larger an egg cell from a frog is than
an egg cell from a human?
A x2 B x21 C x48 D x300
10. Four freshly cut potato cylinders were soaked for one hour in di erent salt solutions
The potato cylinders were then pinned to cork blocks. Two of the potato cylinders are
shown.
Which solution would cause the potato cylinder to be the most accid?
A 0.1 mol per dm3 salt solution
B 0.3 mol per dm3 salt solution
C 0.7 mol per dm3 salt solution
D 1.0 mol per dm3 salt solution
11. Which statement describes the net movement of particles during di usion?
A from higher to lower concentration down a concentration gradient
B from higher to lower concentration against a concentration gradient
C from lower to higher concentration down a concentration gradient
D from lower to higher concentration against a concentration gradient
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12. The diagram shows a plant cell after it has been submerged in a solution, P, for 20
minutes.
Which row describes the water potential of solution P at the start of the experiment and
the condition of the cell after 20 minutes?
13. Female moths release chemicals into the air. Male moths detect these chemicals and
y towards the females.
How do the chemicals spread through the air?
A active transport
B di usion
C osmosis
D transpiration
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14. The graph shows how the turgor pressure inside a plant cell varies when the cell is
placed in external solutions of di erent concentrations.
What is the state of the cell at point X?
A It has gained water and is accid.
B It has gained water and is turgid.
C It has lost water and is accid.
D It has lost water and is turgid.
15. What is an example of a tissue?
A a chloroplast B the palisade mesophyll C a neuron D the pancreas
16. The diagram shows four animal cells, as seen under a light microscope.
What will be present at X?
A one cell membrane
B one cell wall
C two cell membranes
D two cell walls
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17. In which diagram would most oxygen molecules di use across the membrane per
minute?
18. Woodlice are small organisms that live in damp places.
In an experiment, three live woodlice are put into a glass container. The diagram shows
what happens after 30 minutes.
Which characteristic of living organisms is shown by this experiment?
A growth B nutrition C respiration D sensitivity
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19. The diagram shows a single-celled organism called Euglena.
Which labelled structures would also be found in an animal cell?
A cell membrane, chloroplast, nucleus
B chloroplast, cytoplasm, nucleus
C cell membrane, cytoplasm, nucleus
D cell membrane, cytoplasm, large permanent vacuole
20. The bonobo and the chimpanzee are two closely related species.
What is the most accurate method of deciding how closely related species are?
A compare evolutionary relationships of other species
B compare the base sequences of their DNA
C compare their anatomy
D compare their morphology
bonobo chimpanzee
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