Of the taxonomic groups listed below, which is the broadest (contains the most species)?  

Consider the following DNA sequences for four different species:  1:  AATCG 2:  ATACC     3:  ATACG 4:  TTAGG Based on the principle of parsimony, which species shares a most recent common ancestor with a species having the sequence ATAGC?  

Flagella occur in both prokaryotes and eukaryotes. Which of the following statements accurately describe how the flagella of prokaryotes and eukaryotes differ?

Which of the following series is arranged in the correct sequence for nitrogen fixation and its subsequent use?  

Which of the following organisms would NOT be classified in the Domain Eukarya?  

The surface of the cells of some Pseudomonas species are covered in numerous threadlike structures.  What is the likely reaction of such a Pseudomonas cell to the presence of a food particle?  

An assumption for the use of molecular clocks is that mutations accumulate at a constant rate over time between two species.

Which of the following is a kingdom?  

Archaea that tolerate and/or require high salinities are called halophiles. 

If the genus Acer (maples) is monophyletic, then this means that all species of maples