Biology
Chemistry
Physics
Earth Sciences
Medical Physics
100
What is the largest organ in the human body?
Skin
100
Which is the most stable allotrope of carbon under standard conditions?
Graphite
100
What is an elastic collision?
An elastic collision conserves both momentum and kinetic energy.
100
How old is the Earth?
Approximately 4.54 billion years.
100
What is a dosimeter used for?
To measure the amount of radiation exposure.
200
What is the most abundant protein in the human body?
Collagen
200
What is the electron configuration of a ground-state copper atom (Cu)?
3d¹⁰ 4s¹
200
What is entropy in thermodynamics?
Entropy measures the disorder of a system.
200
What is the longest river on Earth?
The Nile River, about 4,135 miles (6,650 km) long.
200
Why is radiation used in cancer treatment?
Radiation targets and damages cancer cells, preventing them from growing and dividing.
300
Which enzyme is responsible for synthesizing the RNA primer during DNA replication?
Primase
300
What type of isomerism does but-2-ene exhibit?
Geometrical (cis-trans) isomerism.
300
What is the difference between a conductors, insulators, and semiconductors?
Conductors allow the free flow of electric charge, insulators prevent charge flow, and semiconductors have an intermediate conductivity that can be modified by doping or external influences like temperature and electric fields.
300
Why is the Earth’s core liquid while the mantle is solid?
The Earth's core is liquid due to extremely high temperatures, while the mantle is solid because the pressure at those depths is high enough to keep it in a solid state.
300
What is a gamma knife used for?
To treat brain tumors.
400
What is the term for the process of programmed cell death?
Apoptosis
400
What is the relationship between bond strength and bond length?
Bond strength and bond length are inversely related: as bond strength increases, bond length decreases, due to the stronger attraction between the atoms.
400
What is the formula for drift speed?
400
What is the water cycle?
The water cycle is the continuous movement of water through evaporation, condensation, and precipitation.
400
What does a CT scan do?
Takes X-ray images to create detailed cross-sectional pictures.
500
What role do prions play in diseases like Mad Cow Disease?
Prions are misfolded proteins that cause other proteins to misfold, leading to neurodegenerative diseases like Mad Cow Disease. These prions accumulate in the brain, causing damage and tissue degeneration.
500
What is the difference between an Arrhenius acid and a Brønsted-Lowry acid?
An Arrhenius acid increases the concentration of hydrogen ions (H⁺) in aqueous solution, while a Brønsted-Lowry acid is any substance that donates a proton (H⁺) to another molecule.
500
Why do we experience seasons on Earth?
Seasons occur because of Earth’s axial tilt, which causes different parts of the planet to receive varying amounts of sunlight throughout the year.
500
What is the largest volcano on Earth?
Mauna Loa in Hawaii.
500
How does a pacemaker works?
A pacemaker works by sending electrical impulses to regulate the heart's rhythm, ensuring it beats at a normal rate.