Name  __________________________________________________________________________________    Date  ____________________________    How  does  the  length  of  the  cell  cycle  vary?  Problem-­‐Solving  Lab,  Observing  and  Inferring  Science  9    The  cell  cycle  varies  greatly  in  length  from  one  kind  of  cell  to  another.    Some  kinds  of  cells  divide  rapidly,  while  others  divide  more  slowly.    Analysis  Examine  the  cell  cycle  diagrams  of  two  different  types  of  cells.    Observe  the  total  length  of  each  cell  cycle  and  the  length  of  time  each  cell  spends  in  each  phase  of  the  cell  cycle.    

   Thinking  Critically  

1. Which  part  of  the  cell  cycle  is  most  variable  in  length?        

2. What  can  you  infer  about  the  functions  of  these  two  types  of  cells?          

3. Why  do  you  think  the  cell  cycle  of  some  types  of  cells  is  faster  than  in  others?    Explain  your  answer.