This is a group in an experiment that allows scientists to determine whether the independent variable alone is the reason for the results of their experimental group(s).
What is a control group?
100
These are the particles that make up an element.
What are protons, neutrons, and electrons?
100
In terms of pH, an acidic solution consists of a higher concentration of this ion.
What are hydrogen ions?
100
Organic molecules always include this element.
What is carbon?
100
These are the four major classes of biologically important organic molecules.
What are proteins, nucleic acids, carbohydrates & lipids.
200
This is the basic unit of life.
What is a cell?
200
This number represents the number of protons plus the number of neutrons in the nucleus of an atom.
What is the atomic mass.
200
This property of water describes the way that water sticks to itself.
What is cohesion?
200
This is a molecule made up of only carbon and hydrogen.
What is a hydrocarbon?
200
C6H12O6 is the chemical formula for which type of organic molecule?
What is a carbohydrate (glucose).
300
This is a non-living infectious agent consisting of DNA and a protein coat.
What is a virus?
300
These are the numbers of valence electrons that can fit in the first and second electron shells of an atom.
What are 2 electrons and 8 electrons?
300
This is the energy required to raise 1 gram by 1 degree Celsius.
What is specific heat?
300
This is the number of covalent bonds that a carbon molecule can make.
What are 4 covalent bonds?
300
This is a chemical reaction that bonds two monomers together to make a polymer.
What is dehydration synthesis?
400
This is the regulation of internal conditions by a cell or living organism.
What is homeostasis?
400
This is a description of the three bond types.
What are bonds that share electrons, bonds in which one atom donates an electron to another atom, and bonds that are held together through interactions between polar molecules?
400
These are molecules that are non-polar and do not dissolve in water.
What is a hydrophobic molecule?
400
This describes the way that a hydrocarbon would mix with water?
What is hyrdophobic / repels water?
400
These are monomers, dimers (2 monomers), and polymers of carbohydrates.
What is a monosaccharide, a disaccharide, and a polysaccharide?
500
These are the characteristics of life.
What are order, regulation, response to environment, growth & development, energy processing, reproduction & evolutionary adaptation?
500
These are versions of a chemical element that have a different number of neutrons in the nucleus. They are generally unstable.
What are radioisotopes?
500
A buffer molecule can lose or gain this in order to balance the pH of a solution.
What is a hydrogen ion (aka. H+ or proton)?
500
These side groups determine the characteristics of a molecule.
What are functional groups?
500
This breaking up of the structure of a molecule can be caused by extreme heat or very high or low pH.