What is the main gas emitted by volcanoes?
Anonymous Quiz
19%
COβ
39%
SOβ
39%
Water vapour (HβO)
3%
Hβ
What does calorimetry measure?
Anonymous Quiz
4%
Volume of a gas
82%
Heat exchanged in a chemical reaction or physical process
7%
Density of a liquid
6%
Electrical conductivity of a solution
Which part of DNA is translated into protein?
Anonymous Quiz
19%
Introns and exons both
11%
Introns only
26%
Exons (after splicing)
43%
Mitochondrial DNA
π1
What is the region around a magnet where magnetic force acts called?
Anonymous Quiz
4%
Electric field
28%
Gravitational field
69%
Magnetic field
0%
Radiation field
What type of symbiosis is the relationship between sharks and pilot fish?
Anonymous Quiz
12%
Parasitism
40%
Mutualism
29%
Commensalism
20%
Predation
Media is too big
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What does Faraday's first law of electrolysis state?
Anonymous Quiz
9%
Current is proportional to voltage
75%
The mass deposited is proportional to the electric charge passed
10%
Resistance is inversely proportional to temperature
6%
EMF is proportional to the magnetic field
Which plant structure absorbs water and minerals from the soil?
Anonymous Quiz
3%
Leaves
7%
Stem
90%
Roots (root hairs)
0%
Flowers
β€1
What is surface tension?
Anonymous Quiz
5%
Internal pressure of a gas
85%
The force that tends to minimise the surface area of a liquid
4%
Viscosity of a fluid
6%
Friction between fluid layers
Which bond forms between amino acids in a protein?
Anonymous Quiz
10%
Ionic bond
77%
Covalent (peptide) bond
10%
Hydrogen bond
4%
Van der Waals bond
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Creating the content you enjoy every day takes constant work, research, and dedication.
Our team of collaborators puts in countless hours, all without any compensation, to keep these channels active, useful, and inspiring.
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Which organ produces red blood cells in adults?
Anonymous Quiz
14%
Liver
9%
Thymus
70%
Red bone marrow
6%
Spleen
β€3
What are planetary rings composed of?
Anonymous Quiz
21%
An asteroid belt around Saturn
66%
Discs of ice and dust orbiting a planet
9%
A nebula around a star
5%
A system of close moons
What is DNA transcription?
Anonymous Quiz
24%
DNA duplication before mitosis
60%
Synthesis of RNA from the DNA template
10%
Protein synthesis from mRNA
6%
Repair of damaged DNA strands
β€1