The central core of a cell where chromosomes are located.
What is the nucleus?
100
Your body's genetic code is stored in these large molecules found in the nucleus of every cell in your body.
What is DNA?
100
This common substance has a chemical formula of H2O.
What is water?
100
The tiniest possible piece of an element.
What is an atom?
100
On the periodic table, elements are organized according to this number - the number of protons per atom.
What is the atomic number?
200
The barrier surrounding a cell which controls what goes into and out of a cell.
What is the cell membrane?
200
Term used to describe a physical characteristic that can be inherited from your parents.
What is a trait?
200
Term that refers to information collected during an experiment.
What is data?
200
These two particles are found within the nucleus of an atom.
What are protons and neutrons?
200
The periodic table is organized into this many vertical groups in which elements share similar properties.
What is eighteen?
300
These organelles found in a cell's cytoplasm are the sites where proteins are assembled.
What are ribosomes?
300
A sequence of DNA that contains the genetic code for a particular protein.
What is a gene?
300
This metallic element with the symbol Hg was once commonly used in thermometers and is one of the only elements to be a liquid at room temperature.
What is mercury?
300
An atom with an unequal number of protons and electrons is said to be one of these.
What are ions?
300
The seven horizontal rows on the periodic table are known by this name.
What are periods?
400
This structure, located outside the cell membrane, provides structure and support to plant and bacterial cells but is not found in animal cells.
What is the cell wall?
400
An individual who has two different versions of a gene in their DNA is said to be this.
What is heterozygous (or hybrid)?
400
Term that refers to a prediction made by a scientist that is to be tested through experimentation.
What is a hypothesis?
400
Type of chemical bond in which a pair of electrons are shared between two atoms.
What is covalent?
400
Elements in the same group or family have the same number of these electrons, found in the outer shell of an atom.
What are valence electrons?
500
In this process, water diffuses across a cell membrane until its concentration is equal on both sides.
What is osmosis?
500
In a cross between two parents who are heterozygous for a particular trait, there is a 25% chance that this phenotype will be expressed in the offspring.
What is recessive?
500
Famous American inventor who is quoted as saying "Invention is 10% inspiration and 90% perspiration".
Who is Thomas Edison?
500
The expression "5H2O" represents this many hydrogen atoms.
What is ten?
500
This group of elements, found at the far right of the periodic table, are very stable and rarely react with other elements to form compounds.