Biology 2100 -Exam 1, Bio 2100 Exam 1 with solutions.

evolution correct answer process of change that has transformed life on earth from its earliest beginnings to the diversity of today Hierarchy of Biological Organization correct answer the biosphere, ecosystems (nonliving and living), communities (array of species), populations (number of species in area), organisms (individual), organs and organ systems, tissues, cells, organelles, and molecules reductionism correct answer reduce view (zoom in) of complex system to more manageably study emergent properties correct answer properties that emerge at each level of biological organization because of the arrangement and interactions of parts (ie. photosynthesis req. entire plant sun etc not just chlorophyll) structure and function correct answer each level these correlate (alot of surface area to absorb sunlight) prokaryotic correct answer bacteria and archaea; lacks a nucleus or other membrane-enclosed organelles eukaryotic correct answer plants animals etc; membrane enclosed organelles chromosomes correct answer contain DNA which contain genes DNA correct answer structure: double helix of nucleotides (A,T,C,G) function: sequence of nucleotides produce certain proteins using RNA gene expression correct answer DNA is transcribed into RNA then translated into a linked series of amino acid (protein monomers) then it folds into protein organisms differ in: correct answer their nucleotide sequence (not genetic code!!) genome correct answer entirety of genetic instructions energy flow correct answer enter through light energy, transfer into chemical energy in food, then lost to ecosystem as heat or recycled enzymes correct answer proteins that catalyze processes feedback regulation correct answer output/product of processes regulates that process