Bio 114 (BIOL114)

1. The last common ancestor of all animals was probably a ________. A) unicellular chytrid B) unicellular yeast C) multicellular algae D) multicellular fungus E) flagellated protist - Answer E) flagellated protist 1. What synapomorphy distinguishes animals as a monophyletic group, distinct from choanoflagellates? A) Sexual reproduction B) Heterotrophy C) Multicellularity D) No cell walls - Answer C) Multicellularity 1. The evolution of animal species has been prolific. Much ...

What are the key traits that define eukaryotes? - Answer - very diverse lineage - diverse morphology (uni- and multicellular, range in size) - diverse reproduction (asexually by mitosis, sexually by meiosis) - membrane-bound organelles & DNA (nucleus) - linear chromosomes How did the nuclear envelope evolve? - Answer Increased infoldings of prokaryotic plasma membranes led to the evolution of the nucleus and evolution by natural selection. What are the advantages of infoldings? -...

Cell Theory - Answer All organisms are made of cells, and all cells come from pre-existing cells. Conclusion: If you trace a cell's lineage back far enough, you will discover that all cells are descended from a common ancestral cell Evolution - Answer The heritable change in a population over time or a change in gene frequency in a population over a number of generations Proximate process - Answer what happens in short term, measured in fractions of lifetimes Ultimate pr...

Contrivance - Answer an adaptation that is a result of the modification of a previous ancestor Adaptation - Answer A trait that helps an organism survive and reproduce Exaptation - Answer evolutionary adaptation of an existing structure for a completely new purpose Vestigial Trait - Answer A trait inherited from a common ancestor but is no longer used dipliod cell - Answer cell that has 2 copies of each chromosome, one from egg, one from sperm (46) Hapliod - Answer ...

What is the branch of biology dealing with the processes, activities, and phenomena characteristic of life? - Answer physiology What are the common activities that must be carried out to sustain life? - Answer 1. Obtain materials with which to construct the body. 2. Obtain energy for construction, maintenance, and reproduction. 3. Exchange gases, principally carbon dioxide and oxygen, with the environment. 4. Regulate body composition by eliminating excess or undesirable mat...

Discussion Assignment for Project Sample CCP 1 for Dr. Larson

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