cleotides                nucleus                      adenine                      cytosine                     guanine uracil                          thymine                      sugar                          transfer                      messenger amino acids               ribosome                    mitochondria             base

Word Bank: Not all words are used 

nucleotides                nucleus                      adenine                      cytosine                     guanine

uracil                          thymine                      sugar                          transfer                      messenger

amino acids               ribosome                    mitochondria             base                           phosphate

promoter                    hydrogen                   chromosomes           DNA                            translation

terminator                  transcription              polypeptide

An enzyme is needed for the Krebs Cycle.  It will be made following the directions contained in a gene of one of the __29__ found in the __30__ of the cell.  A portion of the double strand of __31__ splits apart between the weak__32__bonds holding the bases together.  This portion contains the code for building the enzyme.  The code message begins with a triplet call a _33__ , followed by the code, then signals the end with a triplet called the _34__.  The DNA is composed of groups of three molecules called __35__ . They are made up of ribose __36__, a __37___ for additional support, and a nitrogenous __38___.  These match up with complementary ones on the opposite strand of DNA.   A cytosine will pair up with __39___.  An RNA uracil will pair up with __40___ on the DNA.  When they line up and join, a __41__ RNA strand is formed.   This process of copying the code into RNA is called __42__.  The RNA will move out to the cytoplasm, to an organelle called a __43__.  There, __44___ RNA molecules will each pick up their respective __45___ that are floating in the cytoplasm and bring them into line next to the first RNA binding them to codons on the RNA copy.   As they join, a __46__ is formed.   This part of the process is called __47__.