A population of one species disperses throughout an area and each finds a unique and distinct niche or isolated habitat.  Over time, the varied demands of their new habitats leads to multiple speciation events originating from one common ancestor.

The point at which a split occurs in a phylogenetic tree, called a _______ _____, represents where a single lineage evolved into a distinct new one.

Phylogeny is the study of…

______________________ may represent the earliest forms of life on Earth.  Fossil evidence of their presence starts about 3.5 billion years ago.  These are large biofilms, a multilayered sheet of prokaryotic organisms.

Homologous Structures are evidence of __________________ Evolution, meaning all the diversity of life originated with one common ancestor.

The definition of a ___________ are groups of organisms grouped together, that are most closely related to each other, and their common ancestor, from which they originated.

Which membrane has a high protein content and a high proportion of galactose-containing glycolipids?

The earliest photosynthetic organisms on Earth likely used an alternative electron source during photosynthesis. What electron source did they use?

Which of the following are accessory pigments that act as secondary light collectors during photosynthesis, to help prevent the formation of reactive oxygen species in the cell?  

Which molecule is produced when PEP carboxylase fixes CO₂ in C4 plants?