Which law describes the relationship between current, voltage and resistance?
Anonymous Quiz
19%
Faraday's law
70%
Ohm's law
6%
Kirchhoff's law
4%
Ampere's law
What is mitochondrial DNA?
Anonymous Quiz
15%
DNA in the cell nucleus
76%
A small circular genome in mitochondria, inherited maternally
5%
Viral DNA integrated into the genome
5%
Mitochondrial messenger RNA
β€2
What causes the aurora borealis?
Anonymous Quiz
6%
Refraction of sunlight in clouds
77%
Interaction between solar wind and Earth's magnetic field
14%
Reflection of moonlight on the atmosphere
3%
Chemical reaction between Oβ and Nβ
β€2
What is alpha radioactivity?
Anonymous Quiz
2%
Emission of electrons
22%
Emission of gamma rays
69%
Emission of a helium nucleus (2 protons + 2 neutrons)
7%
Emission of neutrons
β€3
What is the pancreas's role in digestion?
Anonymous Quiz
5%
Produces hydrochloric acid
88%
Secretes digestive enzymes (lipase, amylase, protease) into the duodenum
4%
Absorbs nutrients
2%
Stores glycogen
β€2π1
What is spectroscopy?
Anonymous Quiz
10%
Study of DNA structure
76%
Analysis of light emitted or absorbed by a substance
10%
Measurement of sound wave speed
3%
Study of gravitational tides
β€3
Which type of reaction releases heat (is exothermic)?
Anonymous Quiz
9%
Photosynthesis
16%
Water electrolysis
49%
Combustion
25%
Dissolution of NaCl in water
β€2
What is the region of space where an electron is most likely to be found called?
Anonymous Quiz
44%
Orbital
23%
Bohr shell
21%
Nucleus
12%
Energy level
β€1
Which brain part controls balance and motor coordination?
Anonymous Quiz
18%
Cerebral cortex
26%
Hypothalamus
50%
Cerebellum
6%
Medulla oblongata
β€1
What is Avogadro's number?
Anonymous Quiz
78%
6.022 Γ 10Β²Β³
11%
3.14 Γ 10βΈ
11%
9.81 Γ 10Β²
0%
1.38 Γ 10β»Β²Β³
What happens to light when it passes from one medium to another?
Anonymous Quiz
44%
Diffraction
44%
Refraction
11%
Polarisation
0%
Dispersion
What is an action potential in neurons?
Anonymous Quiz
0%
A static electrical potential
100%
A brief electrical impulse that travels along the neuron
0%
A change in membrane potential only during sleep
0%
The potential difference between two neurons
What is the main gas emitted by volcanoes?
Anonymous Quiz
0%
COβ
50%
SOβ
50%
Water vapour (HβO)
0%
Hβ