Biology 2100 -Exam 1 Exam with
complete solutions latest version
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!!)
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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
-negative: presence/absense of product stops cycle (ie glucose taken up by liver and
muscle cells stops insulin production)
-positive: speeds up production (ie. blood vessel damaged platelets begin to aggregate
which attract more platelets
three domains - CORRECT ANSWER-bacteria and archaea (prokaryotic) and eukarya
Kingdoms - CORRECT ANSWER-plantae, fungi, animalia, protists, monera
(prokaryotes)
KPCOFGS - CORRECT ANSWER-kingdom, phylum, class, order, family, genus,
species
Darwin - CORRECT ANSWER-Origin of Species: Darwinism --> concept of evolution,
descent with modification and natural selection
cohesion - CORRECT ANSWER-H bonds that hold water together
adhesion - CORRECT ANSWER-clinging of one substance to another (Water to glass)
water - CORRECT ANSWER-high specific heat (amt of heat to be absorbed or lost to
change 1g by 1˚C), high heat of vaporization (heat 1g liquid to change to gaseous), less
dense solid
ph - CORRECT ANSWER--log [H+] (lower pH the more H+ present)
hydroxyl - CORRECT ANSWER--OH
carbonyl - CORRECT ANSWER--C=O
carboxyl - CORRECT ANSWER--COOH (function as acid)
amino - CORRECT ANSWER--NH2 (acts as base)
sylfhydryl - CORRECT ANSWER--SH
phosphate - CORRECT ANSWER--OPO3(2-)
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