The number of these determines the atomic number of an element.
What are protons?
100
These types of cells have cell walls made of chitin.
What are plant cells?
100
This term refers to something in a circuit, often a light bulb, through which the circuit does work.
What is a load?
100
This scientist originated the theory that species adapt and change over time.
Who was Charles Darwin?
100
This planet experiences a dramatic greenhouse effect due to its very thick atmosphere.
What is Venus?
200
This family of elements has no charge and does not usually react.
What are the noble gases?
200
These cells have no true nucleus.
What are prokaryotes?
200
This simple machine involves wrapping an inclined plane around a post.
What is a screw?
200
This scientist developed the model of the atom that had a nucleus in the middle containing protons and neutrons, and had electrons orbiting the nucleus like planets around the sun.
Who was Niels Bohr?
200
This Constitutional amendment states that those powers not specifically allocated to the federal goverment by the Constitution are to be reserved for the state and local governments.
What is the 10th Amendment?
300
This is the color that bases turn litmus paper.
What is blue?
300
This word refers to the process by which the body and the body's cells self-regulate in order to maintain the balance necessary to maintain life.
What is homeostasis?
300
This is the number of classes of levers.
What is 3?
300
Adding water to an acid is very dangerous and inadvisable because the dissolution of the acid gives off extreme amounts of this.
What is heat?
300
This German pastor and martyr wrote the book "The Cost of Discipleship" and was involved in the plot to assassinate Adolf Hitler.
Who was Dietrich Bonhoeffer?
400
This term means "a solution that is capable of conducting electricity".
What is an electrolyte?
400
This is the percentage of offspring which will have the dominant trait in the cross between a homozygous recessive parent and a heterozygous parent.
What is 50%?
400
The amount of inertia an object has is dependant upon the amount of this that it has.
What is mass?
400
An educated guess which proposes to answer a question according to the scientific method is called this.
What is a hypothesis?
400
This value is the approximate acceleration due to gravity on Earth.
What is 9.8 meters per second squared.
500
These elements are the type which participate in covalent bonding.
What are nonmetals?
500
In this process of cell reproduction, the daughter cells are clones of the parent cell, having the exact same number of chromosomes.
What is mitosis?
500
This kind of energy is the energy of motion.
What is kinetic energy?
500
This nucelotide is present in RNA but not in DNA.
What is Uracil?
500
This is the number of electrons in the typical Oxygen ion.