Life 103 Final Exam Questions & Answers Already Passed!!

abiotic - Answer-nonliving: referring to physical and chemical properties of an environment biotic - Answer-pertaining to the living organisms in the environment catabolism - Answer-releases energy by breaking down complex molecules to simpler molecules anabolism - Answer-consumes energy to synthesize a complex molecule from simpler compounds metabolism - Answer-the totality of an organism's chemical reactions, consisting of catabolic and anabolic pathways, which manage the material and energy resources of the organism growth - Answer-maintenance of a higher rate of synthesis than catalysis. increases in size in all of its parts reproduction - Answer-ability to produce new organisms division of one cell to form 2 new cells replication and passing on of genetic material stimuli - Answer-in homeostasis, a fluctuation in a variable that triggers a return to a set point. A response can take many forms homeostasis - Answer-regulation of internal environment. the steady state physiological condition of the body prokaryote - Answer-bacteria of all kinds eukaryote - Answer-a type of cell with a membrane-enclosed nucleus and membrane-enclosed organelles5 kingdoms - Answer-prokaryote, protist, plant, fungi, animal Hierarchical Classification - Answer-Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species heterotrophic - Answer-obtain energy and organic molecules by ingesting other organisms Grade - Answer-group whose members share key biological features bilateral symmetry - Answer-2-sided symmetry dorsal side and ventral side right and left side anterior and posterior ends cephalization acoelomate - Answer-not a true body cavity, essentially solid throughout pseudocoelomate - Answer-body cavity derived from mesoderm and endoderm "false" body cavity coelomate - Answer-animals that posses a true coelom, has a circle of tissue surrounding digestive tract protostome - Answer-spiral and determinate cleavage solid masses of mesoderm split and form coelom mouth develops from blastopore deuterostome - Answer-radial and indeterminate cleavage folds of archenteron form coelom anus develops from blastoporetriploblastic - Answer-3 germ layers Ectoderm Mesoderm Endoderm 4 stages of they hypothesis for the origin of life on Earth by chemical evolution - Answer-1.) abiotic synthesis of small organic molecules 2.)joining of these small molecules into macromolecules, including proteins and nucleic acids 3.) packaging of these molecules into "protobionts," droplets with membranes that maintained an internal chemistry different from that of their surroundings 4.)the origin of self-replicating molecules that eventually made inheritance possible