2 Chemical Reactions BEFORE YOU READ
On the lines below, explain why you think rust forms on metal.
Then read the section to learn the role of chemical reactions in
living things.

The bacteria found in a soil is usually harmful and measure are taken to remove any traces of microorganisms 1. true 2. false

Match the digestive enzymes to the macro molecules they to digest. down fats into glycerol and fatty acids down carbohydrates into simple sugars down nucleic acids into nitrogenous bases and simple sugars down proteins into amino acids

Which phase of the cell cycle ensures that identical copies of the dna are made for daughter cells?