Period of evolutionary change in which groups of organisms form many new species whose adaptations allow them to fill different ecological roles in their communities.   

  BONUS #3:    Which of the following statements is accurate with regard to a phylogeny, as represented by a phylogenetic tree?  

Put the following terms in the correct sequence of levels according to the biological hierarchy.    NOTE:  BIOSPHERE is at the top and ATOM placed at the bottom!!!!  

Which enzyme initiates the unwinding of the DNA double helix by breaking hydrogen bonds between complementary base pairs during replication?

Explain the role of the respiratory system in maintaining homeostasis.

  Inherited characteristic of an organism that enhances its survival and reproduction in a specific environment.  

Which disorder is characterized by inflamed bronchioles and wheezing?

Describe the process of external respiration, including the exchange of gases at the alveoli.

  Which one of the following conditions would most likely cause allele frequencies of a gene pool to change by chance (hint: by imperfect sampling or sampling error!!!)?  

Which condition involves involuntary urine loss?