Sec 3 Challenge 2
Quiz
•
Science
•
9th Grade
•
Hard
JEM Belen
Used 1+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following would be found dissolved in the blood plasma of a human?
Glucose, urea, and hormones
Oxygen, urea, and starch
Carbon dioxide, hormones, and haemoglobin
Carbon dioxide, oxygen, and urea
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Some chemical compounds are purified by recrystallisation.
What can be used to test the purity of the crystals?
melting point
colour of crystals
size of crystals
solubility
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Why are passengers not allowed to stand up on the top deck of the double-decker bus?
They cannot be trusted to stand where the driver can’t see them.
They would raise the pressure exerted by the bus on the road.
They would increase the gravitational potential energy of the bus.
They would raise the centre of mass of the bus, causing it to become less stable.
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following is a correct explanation of the effect of root hairs on absorption?
Provide a large surface area, maximising the rate of absorption of water and ions by osmosis
Provide a large surface area, maximising the rate of absorption of water by osmosis and ions by active transport
Increase the surface area, maximising the uptake of water by osmosis and ions by diffusion
Provide a surface area, increasing the rate of absorption of water and ions by active transport
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the electronic structure of an atom with a proton number 5 and a nucleon number 11?
1,8,2
2,8,1
2,3
3,2
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following energy sources produce no atmospheric pollution?
Wave power, solar cells, and geothermal power
Nuclear fuel, wave power, and solar cells
Fossil fuels, biofuels, and nuclear fuel
Biofuel, nuclear fuels and wave power
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following orders would be correct showing the size of structure from biggest to smallest?
Chromosome → red blood cell → stomach → gene → nucleus
Stomach → red blood cell → gene → chromosome
Stomach → red blood cell → nucleus → chromosome → gene
Gene → chromosome → red blood cell → stomach
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