What do they call each subunit in a complete molecule?
100
independent
What is the name of the variable that a scientist changes or manipulates himself?
100
chemical reactions
What changes substances into different substances by breaking and forming chemical bonds?
100
catalyst
What is the substance called that decreases the activation energy needed to start a chemical reaction, and as a result
also increases the rate of the chemical reaction?
200
Water
What is less dense as a solid than as a liquid?
200
Lipids
What do they call nonpolar molecules that include fats, oils and cholesterol?
200
independent variable
Changes in dependent variables "depend upon" what?
200
Bond energy
What is the amount of energy called that will break a bond between two atoms called?
200
substrates
What are specific reactants that an enzyme acts on called?
300
hydrogen bond
What is the attraction between a slightly positive hydrogen atom and a slightly negative atom, often oxygen or nitrogen called?
300
amino acids
A protein is a polymer and is made of monomers called what?
300
hypothesis
What is a proposed answer for a scientific question called?
300
products
What are the substances made by a chemical reaction called?
300
active sites
What is the location called where substrates bind to an enzyme?
400
cohesion
What is the attraction among molecules of the same substance called?
400
nucleic acid
What is the polymer of nucleotides, the genetic material of organisms called ?
400
constants
What are the conditions that do not change in an experiment called?
400
equilibrium
What is reached when both the reactants and products are made at the same time?
400
stomach
Name one place where enzymes are at work in our bodies?
500
False it's very acidic
True or False. A ph of 0 is neutral?
500
nucleotide
What is a monomer that forms DNA and has a phosphate group, a sugar and a nitrogen - containing base called?
500
theory
What is a proposed explanation for a WIDE range of observations and experimental results that are supported by a WIDE range of evidence called?
500
exothermic
What is a chemical reaction called that releases more energy than it absorbs?
500
True
True or False A change in ph can affect the hydrogen bonds in enzymes?