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Sec 4 NA Sci Bio TYS MCQ 2018 Set B
Quiz by HAO YI
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​The diagram shows a section through a leaf.
Which structure is an organ and which structure is a tissue?
A
B
C
D
What is the function of the cell wall?
The diagram shows a section through a leaf.
Which structure is an organ and which structure is a tissue?
The diagram shows an experiment about diffusion.
The same sugar is used to prepare sugar solution X and the 20% sugar solution.
More sugar diffuses out of the bag than diffuses in.
What is the concentration of sugar in solution X at the start of the experiment?
Glycogen is a large molecule made up of small units.
Which diagram represents part of a glycogen molecule?
A food substance is tested with three reagents. The results of the tests are shown.
-Â Â Â Â iodine solution gives a blue-black colour
-Â Â Â Â the biuret test gives a violet colour
-Â Â Â Â the ethanol test gives an emulsion
What does this food substance contain?
What is a role of the liver?
A healthy student has 5 units of glucose in their blood plasma.
After eating a meal the number of units of glucose will increase.
Two hours after the meal a small blood sample is removed from four different blood vessels in the student's body.
Three blood vessels have 8 units of glucose and one has 10 units of glucose.
Which blood vessel as 10 units of glucose?
The diagram shows a section through a leaf.
Which layer on the diagram contains a stomata?
Chlorophyll is a green substance found in the cells of plants.
What is the function of chlorophyll?
Water moves through plant stems. Plant stems contain xylem and phloem.
Which statement is correct?
What is the function of the valves in veins?
A cause of heart disease is an occlusion.
In which blood vessel does this occlusion occur?
For which process is blood plasma necessary?
A health check was carried out on four 40-year-old males of the same height and weight.
Which male is most at risk of coronary heart disease?
In cigarette smoke, what are the effects of nicotine and carbon monoxide on a person?
Which are characteristics of alveoli that improve gas exchange?
