Biology 121 Exam 1 questions and
answers
Hierarchy of life order - Ans bio-eco-com-pop-organism-organ syst-organ-
tissue-cell-organelle-molecule-atom /each step causes new properties to
emerge as result of interaction among lower-level components
systems biology - Ans model dynamic behavior of a whole biological systems
based on a study of interactions among systems parts
reductionism - Ans complex systems broken down to simpler components
that are more manageable to study
Energy - Ans energy from sunlight-converted to chemical energy by
producers-passed to consumers
cell - Ans organisms basic unit of structure and function
eukaryotic cells - Ans contain membrane-enclosed organelles including dna-
containing nucleus
prokaryotic cells - Ans lack dna containing nucleus or membrane
DNA - Ans long linear polymer in the nucleus of cell formed from nucleotides
and shaped like a double helix transfers heritable info from parents to
offspring
gene expression - Ans conversion of the information encoded in a gene first
into messenger RNA and then to a protein
, genomics - Ans study and comparison of genomes within a single species or
among different species
positive feedback - Ans Feedback that tends to magnify a process or
increase its output. regulation common to life at all levels which regulate
biological systems
natural selection - Ans the principle that, among the range of inherited trait
variations, those that lead to increased reproduction and survival will most
likely be passed on to succeeding generations
inquiry - Ans scientists make observations by collecting data
inductive reasoning - Ans drawing a general conclusion
hypothesis - Ans a proposal intended to explain certain facts or observations
deductive reasoning - Ans predictions that can be used to test hypotheses
made from inductive reasoning
controlled experiments - Ans designed to demonstrate effect of 1 variable by
testing control groups and experimental groups that differ in only that one
variable
scientific theory - Ans generated new hypotheses that is supported by large
body of evidence
technology - Ans method or device that applies scientific knowledge for
some specific purpose that affects society
answers
Hierarchy of life order - Ans bio-eco-com-pop-organism-organ syst-organ-
tissue-cell-organelle-molecule-atom /each step causes new properties to
emerge as result of interaction among lower-level components
systems biology - Ans model dynamic behavior of a whole biological systems
based on a study of interactions among systems parts
reductionism - Ans complex systems broken down to simpler components
that are more manageable to study
Energy - Ans energy from sunlight-converted to chemical energy by
producers-passed to consumers
cell - Ans organisms basic unit of structure and function
eukaryotic cells - Ans contain membrane-enclosed organelles including dna-
containing nucleus
prokaryotic cells - Ans lack dna containing nucleus or membrane
DNA - Ans long linear polymer in the nucleus of cell formed from nucleotides
and shaped like a double helix transfers heritable info from parents to
offspring
gene expression - Ans conversion of the information encoded in a gene first
into messenger RNA and then to a protein
, genomics - Ans study and comparison of genomes within a single species or
among different species
positive feedback - Ans Feedback that tends to magnify a process or
increase its output. regulation common to life at all levels which regulate
biological systems
natural selection - Ans the principle that, among the range of inherited trait
variations, those that lead to increased reproduction and survival will most
likely be passed on to succeeding generations
inquiry - Ans scientists make observations by collecting data
inductive reasoning - Ans drawing a general conclusion
hypothesis - Ans a proposal intended to explain certain facts or observations
deductive reasoning - Ans predictions that can be used to test hypotheses
made from inductive reasoning
controlled experiments - Ans designed to demonstrate effect of 1 variable by
testing control groups and experimental groups that differ in only that one
variable
scientific theory - Ans generated new hypotheses that is supported by large
body of evidence
technology - Ans method or device that applies scientific knowledge for
some specific purpose that affects society
