Sec 4 Express Sci Bio TYS MCQ 2018 Set B

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Q 1/20
Score 0
The diagram shows an electron micrograph of a cell.
Which row correctly identifies structures W, X, Y and Z?
29
A
B
C
D

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20 questions

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Q1
The diagram shows an electron micrograph of a cell.
Which row correctly identifies structures W, X, Y and Z?
A
B
C
D
60s
Q2
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?
Water moves from the potato into the salt solution.
Salt moves from the salt solution into the water.
Water moves from the salt solution to the potato.
Salt moves from the potato into the salt solution.
60s
Q3
A sample of food contains reducing sugar and fat.
Which food test results show this?
Biuret solution turns purple and iodine solution turns blue/black.
Brick red precipitate formed with Benedict's solution and white emulsion formed with ethanol and water.
Iodine solution turns blue-black and white emulsion formed with ethanol and water.
Brick red precipitate formed with Benedict's solution and biuret solution turns purple.
60s
Q4
The diagram shows a digestive enzyme molecule.
Which diagram shows the correct substrate and product for this enzyme?
60s
Q5
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?
60s
Q6
What is the function of the gall bladder?
production of bile
absorption of fat
storage of bile
digestion of fat
60s
Q7
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?
60s
Q8
Which statement describes transpiration?
the flow of water up the xylem
the intake of rainwater through stomata
the loss of water vapour from stomata
the uptake of water into root hair cells
60s
Q9
Some blood vessels have valves.
What is the function of these valves?
to create pulse beats in the blood
to reduce the pressure of the blood
to prevent the backflow of blood
to push the blood forward
60s
Q10
Which process is not a function of a white blood cell?
tissue rejection
phagocytosis
antibody formation
blood clotting
60s
Q11
The diagram shows the respiratory system.
What is structure X?
a bronchiole
a bronchus
the trachea
the larynx
60s
Q12
Which substance is produced by the muscles during anaerobic respiration?
water
carbon dioxide
alcohol
lactic acid
60s
Q13
Which row about hormones is correct?
A
B
C
D
60s
Q14
What happens after a person eats a meal containing lots of sugar?
Insulin is produced, which causes glycogen to be stored in the pancreas.
Insulin is produced, which causes glycogen to be stored in the liver.
Glucagon is produced, which causes glucose to be stored in the pancreas.
Glucagon is produced, which causes glucose to be stored in the liver.
60s
Q15
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?
cervix $\rightarrow$ vagina $\rightarrow$ oviduct $\rightarrow$ uterus
cervix $\rightarrow$ vagina $\rightarrow$ uterus $\rightarrow$ oviduct
vagina $\rightarrow$ cervix $\rightarrow$ uterus $\rightarrow$ oviduct
vagina $\rightarrow$ cervix $\rightarrow$ oviduct $\rightarrow$ uterus
60s