Biology
Chemistry
Physics
Earth and Space
Multidisciplinary
100

How many complete sets of chromosomes does a haploid cell have?

1

100

What is the last element on the periodic table that is not radioactive?

Lead

100

What quantity is equivalent to mass times acceleration?

Force

100

How fast does the universe expand by megaparsec?

About 73 kmh per second

100

What intermolecular forces stabilize the secondary structure of a protein?

Hydrogen Bonds


200

What quantity in a chemical reaction is decreased when an enzyme binds to its substrate?

Activation Energy

200

Which element on the periodic table has the highest electron affinity?

Chlorine

200

What is Newton's first law?

This law states that an object in motion stays in motion unless acted upon by an external force.

200

What is the most abundant element on Earth, by total mass?

Iron


200

What determines polarity of a molecule?

Its geometry

300

What type of natural selection favors intermediate phenotypes (physical characteristics of an organism) over extreme phenotypes?

Stabilizing Selection

300

Why does water have such a high boiling point and specific heat capacity?

Strong intermolecular forces and up to four hydrogen bonds per molecule

300

What is acceleration?

This quantity is the rate of change of an object's velocity, measured in m/s^2

300

What’s the name of the first spacecraft to leave our solar system?

Voyager I

300

Which law determines how light refracts in different mediums?

Snell's Law

400

What enzyme phosphorylates, or adds a phosphate group, to its substrate?

Kinase

400

What will happen to the equilibrium constant of an exothermic reaction if temperature is decreased?

It increases

400

What is Refraction?

The bending of light as it passes from one medium into another, like air into water.

400

What chemical degrades the ozone layer?

Chlorofluorocarbons (CFCs)

400

What is Plancks constant?

 6.626 * 10^-34 m^2 kg/s

500

What is the main reproductive organ of an angiosperm, or flowering plant?

Stamen

500

Why are noble metals like silver, gold, and platinum so unreactive?

Relativistic effects and stabilized d-orbital subshells

500

What is momentum?

The product of an object's mass and velocity.

500

How many Gs do humans experience on Earth?

1 G

500

What are the first two terms of the Taylor series of f(x) e^x where a = 0?

1+x