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Sec 4 Express Sci Bio TYS MCQ 2021 set B
Quiz by HAO YI
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The diagram shows a plant cell.
Which labelled cell structure produces carbon dioxide?
A
B
C
D
The diagram shows a plant cell.
Which labelled cell structure produces carbon dioxide?
Which of the statements about movement of substances involve diffusion?
1 movement of carbon dioxide from body cells into the bloodstream
2 movement of glucose from the ileum into the bloodstream
3 movement of oxygen from the lungs into the bloodstream
Six equal sized cylinders of raw potato are placed into different concentrations of sucrose solution and left for 24 hours.
The percentage change in mass is calculated for each cylinder.
The results are shown.
What is the percentage concentration of sucrose in the cells of the potato cylinders?
Which of the following chemicals detects the presence of reducing sugars in a food sample?
Protease is added to six different test-tubes each containing the same volume of protein.
The tubes were kept at different temperatures.
The time taken for the digestion of the protein is shown.
Which temperature is most likely to be optimum for the action of protease?
What is the function of bile?
On a sunny day, bubbles of gas produced by photosynthesis are released by the green seaweed in a rock pool.
Which gas is present in the highest proportion in the bubbles?
Under which conditions does transpiration occur the fastest?
Which blood vessel in the human circulatory system carries deoxygenated blood from the heart to the lungs?
The diagram shows structures in the human gas exchange system.
Which row identifies the structures X and Y?
Carbon monoxide is found in tobacco smoke.
Which statement describes the effect of carbon monoxide on the body?
Which row describes where a hormone is produced and destroyed in the human body?
Which graph shows the relationship between light intensity and pupil size of the eye?
The diagram shows how the thickness of the lining of the uterus changes during the menstrual cycle.
At which point during the cycle is the level of progesterone highest?
Which pair of letters represent the sugar phosphate backbone of a DNA molecule?
What are the different versions of a gene called?
The diagram shows the genotypes of two parents and their possible offspring.
Which row is correct for the parents and offspring Z?
The diagram shows a biogas generator for sewage treatment.
Which gas produced in the biogas generator is used as a fuel?
