Biology
Chemistry
Physics
Environmental Systems
Potpourri
100

What is the most abundant protein in the human body?

Collagen

100

What is the pH of a neutral solution at 25°C?

7

100

What is the unit of measure for force?

Newton (N)

100

What is the term for the variety of life forms in an ecosystem?

Biodiversity

100

Which element is found in diamonds?

Carbon
200

What is the term for the programmed cell death that occurs as a normal part of an organism's growth and development?

Apoptosis

200

What is the term for the amount of energy required to remove one mole of electrons from one mole of atoms in the gaseous state?

Ionization energy

200

What principle explains why a boat floats on water?

Archimedes' principle

200

What is the main gas responsible for the greenhouse effect?

Carbon dioxide (CO₂)

200

What is the tallest mountain in the solar system, and on which planet is it located?

Olympus Mons on Mars

300

Which organelle is responsible for synthesizing lipids and detoxifying chemicals within the cell?

Smooth Endoplasmic Reticulum

300

What is the molecular geometry of a molecule with 4 bonding pairs and 1 lone pair around the central atom?

Seesaw

300

Which law states that the pressure of a gas is inversely proportional to its volume when temperature is constant?

Boyle's Law

300

Which process in the nitrogen cycle converts nitrogen gas from the atmosphere into a form usable by plants?

Nitrogen fixation

300

Which scientist is known for his theory of general relativity?

Albert Einstein

400

In which phase of meiosis do homologous chromosomes undergo crossing over?

Prophase I

400

Which element has the highest electronegativity?

Fluorine 

400

What phenomenon occurs when a wave changes direction as it passes through an opening or around an obstacle?

Diffraction

400

What is the term for species that are native to a specific location and found nowhere else on Earth?

Endemic species

400

What is the hardest naturally occurring substance on Earth?

Diamond

500

What is the name of the process by which bacteria incorporate foreign DNA from their surroundings?

Transformation

500

In which type of reaction do two substances combine to form a single product?

Synthesis Reaction

500

What is the name of the effect that causes the frequency of a wave to change for an observer moving relative to the source of the wave?

Doppler effect

500

What law explains the energy loss as energy is transferred up trophic levels in an ecosystem?

The Second Law of Thermodynamics

500

In which year was the first email ever sent?

1971