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Sec 4 Express Sci Bio TYS MCQ 2018 Set B
Quiz by HAO YI
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The diagram shows an electron micrograph of a cell.
Which row correctly identifies structures W, X, Y and Z?
A
B
C
D
The diagram shows an electron micrograph of a cell.
Which row correctly identifies structures W, X, Y and Z?
An experiment was set up using the equipment shown.
The potato piece was removed from the distilled water, placed into the concentrated salt solution and left for 10 minutes.
Which statement describes the overall result of this experiment?
A sample of food contains reducing sugar and fat.
Which food test results show this?
The diagram shows a digestive enzyme molecule.
Which diagram shows the correct substrate and product for this enzyme?
Trypsin is a protease that digests protein in milk.
In an investigation, equal quantities of milk and trypsin are mixed together at different temperatures. The time taken for the mixture to turn colourless was measured.
Which graph shows the effect of temperatures on the time taken for the mixture to turn colouless?
What is the function of the gall bladder?
The diagram shows four test-tubes that are set up to investigate photosynthesis and respiration.
Each test-tube is filled with red hydrogencarbonate indicator solution and contains a piece of pondweed.
Hydrogencarbonate indicator changes from red to purple in very low carbon dioxide concentrations and from red to yellow in high carbon dioxide concentrations.
In which tube will the indicator turn purple first?
Which statement describes transpiration?
Some blood vessels have valves.
What is the function of these valves?
Which process is not a function of a white blood cell?
The diagram shows the respiratory system.
What is structure X?
Which substance is produced by the muscles during anaerobic respiration?
Which row about hormones is correct?
What happens after a person eats a meal containing lots of sugar?
Before fertilisation takes place, sperms travel through some parts of the female reproductive system to reach the ovum (egg).
What is the correct order of the parts through which the sperms travel?
A section of one strand of DNA has the following sequence of bases.
A-T-T-G-C-A
In the same section of DNA, what is the sequence of bases on the complementary nulceotide strand?
The diagram shows the genotypes of two parents and their possible offspring.
Which row is correct for the parents and offspring Z?
A child is born with Down's Syndrome.
Which diagram shows the correct number of chromosomes in the cells of the parents, in their gametes and in the cells of the child with Down's Syndrome?
The diagram shows part of the carbon cycle.
Which stage releases oxygen gas into the atmosphere?
Untreated sewage is released into a river. This causes the amount of bacteria and the concentration of oxygen in the river water to change downstream from where the sewage is released.
Which graph shows these changes?
