NAS2 CHALLENGE UPDATED FINAL PAPER QUESTIONS
AND ANSWERS GRADED A+
✔✔Non-polar bonds - ✔✔share their electrons equally
✔✔Polar Covalent Bonds - ✔✔do not share electrons equally causing there to be 2
charged poles
✔✔Enzymes - ✔✔Bind and HOld the reacting molecules(the substrates) in the proper
position for chemical interaction
✔✔Substrate - ✔✔Bound to enzyme's active site they undergo structural changes that
result in a new product. Once the reaction has occurred the enzyme releases product
✔✔Decomposition reactions - ✔✔occur when a molecule is broken down into smaller
molecules; AB ---> A + B
✔✔Synthesis Reactions - ✔✔occur when two or more atoms or molecules combine to
form a larger more complex molecule; A + B ---> AB
✔✔Exchange reactions - ✔✔occur when a switch is made between molecule parts and
different molecules are made; AB + DC ---> AD + CB
✔✔Enzyme Catalyze Chemical Reactions - ✔✔Enzymes bind and "hold" the reacting
molecules (the substrates) in the proper position for chemical interaction. While the
substrates are bound to the enzyme's active site, they undergo structural changes that
result in a new product. Once the reaction has occurred, the enzyme releases the
product.
✔✔Waters Role In Life - ✔✔•Reduces temperature fluctuations
•Acts as a solvent for sugars, salts, and other solutes
•Important reactant in chemical reactions
• Acts as a transport medium
•Forms a cushion around the brain that helps protect it from physical trauma
✔✔pH Scale - ✔✔The symbol for hydrogen ion concentration; a measure of the relative
acidity or alkalinity of a solution (pH lower than 7 is acidic; pH higher than 7 is alkaline)
✔✔Organic Compound - ✔✔compounds in the body containing carbon
✔✔Monomer - ✔✔are small molecules, mostly organic, that can join with other similar
molecules to form very large molecules, or polymers. All monomers have the capacity to
form chemical bonds to at least two other monomer molecules.
AND ANSWERS GRADED A+
✔✔Non-polar bonds - ✔✔share their electrons equally
✔✔Polar Covalent Bonds - ✔✔do not share electrons equally causing there to be 2
charged poles
✔✔Enzymes - ✔✔Bind and HOld the reacting molecules(the substrates) in the proper
position for chemical interaction
✔✔Substrate - ✔✔Bound to enzyme's active site they undergo structural changes that
result in a new product. Once the reaction has occurred the enzyme releases product
✔✔Decomposition reactions - ✔✔occur when a molecule is broken down into smaller
molecules; AB ---> A + B
✔✔Synthesis Reactions - ✔✔occur when two or more atoms or molecules combine to
form a larger more complex molecule; A + B ---> AB
✔✔Exchange reactions - ✔✔occur when a switch is made between molecule parts and
different molecules are made; AB + DC ---> AD + CB
✔✔Enzyme Catalyze Chemical Reactions - ✔✔Enzymes bind and "hold" the reacting
molecules (the substrates) in the proper position for chemical interaction. While the
substrates are bound to the enzyme's active site, they undergo structural changes that
result in a new product. Once the reaction has occurred, the enzyme releases the
product.
✔✔Waters Role In Life - ✔✔•Reduces temperature fluctuations
•Acts as a solvent for sugars, salts, and other solutes
•Important reactant in chemical reactions
• Acts as a transport medium
•Forms a cushion around the brain that helps protect it from physical trauma
✔✔pH Scale - ✔✔The symbol for hydrogen ion concentration; a measure of the relative
acidity or alkalinity of a solution (pH lower than 7 is acidic; pH higher than 7 is alkaline)
✔✔Organic Compound - ✔✔compounds in the body containing carbon
✔✔Monomer - ✔✔are small molecules, mostly organic, that can join with other similar
molecules to form very large molecules, or polymers. All monomers have the capacity to
form chemical bonds to at least two other monomer molecules.
