Bio- Chapter 2 sections 3--4

What is a chemical reaction?

• A process that changes one set of chemicals into another.

  
  

• A process that changes one set of lipids into another.

• A process that changes one set of covalent bonds into another.

Tags

NGSS.HS-PS1-7

reactant

• the elements or compounds that enter into the reaction
  

• the elements of compounds produced by the reaction

  
  

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is released or absorbed whenever chemical bonds for or are broken?

• Energy

• bonds

• nucleotides

Tags

NGSS.HS-PS1-4

What is the energy of activation?

• The amount of energy needed to start a reaction.

  
  

• The amount of energy needed to end a reaction.

  
  

How does the addition of a catalyst affect the energy of activation of a chemical reaction?

• Reduces the amount of activation energy needed.

• Increases the amount of activation energy needed.

What type of catalysts affect biochemical reactions?

• Enzymes

• nucleic acids

• lipids

What makes proteins the ideal types of compounds to act as enzymes?

• They have a specific shape

• They have a specific mass.

• They are made of hydrogen bonds.

How is a substrate and its enzyme like a lock and its key?

• Their shapes connect.

• A substrate and its enzyme are both made of metal like a lock and its key.

What best describes the relationship between starch and glucose?

• Starch and glucose are reactants that combine to form nucleic acids.

• Starch is a polymer made of glucose monomers.
  

• Starch and glucose are reactants that combine to form proteins

• Starch is a polymer made of glucose monomers

Several different amino acids join together to form a protein. How do any two types of amino acids differ from one to another?

• The number of chemical bonds formed by the central carbon atom

• the number of amino groups in the molecule

• The chemical structure of the R group in the molecule.

• the number of carboxyl groups in the molecule