BIO 200 Exam (Lectures 2-10)
Questions with Correct Answers
Archeocyathids - ANSWER-Primary frame builders of Early Cambrian organic reefs,
probably suspension-feeding sponges that pumped water through holes in their
vase-shaped and bowl-shaped skeletons. close to the base of the tree of life which
can tell us a lot about animal life
1st land plants - ANSWER-Paleozoic era. probably looked similar to modern carpet
moss
1st land animals - ANSWER-fish evolved legs, started walking on land, early
amphibian tetrapod
permian extinction - ANSWER-paleozoic era ended with this. 96% of all life went
extinct. Mass extinction of insects but leaves room for adaptation.
Age of Reptiles - ANSWER-Mesozoic Era- dinosaurs ruled
1st mammals - ANSWER-Mesozoic Era- looked similar to a weasle
K-T extinction - ANSWER-mesozoic era ends with this-mass extinction of animal and
plant species in a short amount of time.
K-T boundary - ANSWER-thin band of sedimentation that represents volcanic activity
and astroidal impact. dust and ash in the atmosphere reduced light and
photosynthesis which helped lead to extinction. When the dust settled, it formed the
boundary .
Geological clock - ANSWER-5 billion years ago to the present. Humans appeared at
11:59 or 1 minute before the present
continental drift and changing geography - ANSWER-land masses moved due to
continental drift climate/oxygen levels changing
Panspermia Hypothesis - ANSWER-* Earth is continuously bombarded with material
from interstellar space, much of it consisting of organic compounds.
* These may have provided the basic building blocks of life.
2 characteristics of life - ANSWER-Stages of development & levels of organization,
replicates itself
four steps to form life - ANSWER-abiotic synthesis of organic molecules, formation of
polymers, formation of protobionts, origin of hereditary material
, Miller-Urey Experiment - ANSWER-attempted to reproduce conditions they thought
were present in early earth. Found that organic molecules can form in a strongly
reducing atmosphere.
building blocks of life based on the miller urey experiment - ANSWER-Amino Acids,
Nucleotides, Sugars, Lipids, ATP
monomers - ANSWER-small unit that can join together with other small units to form
polymers
polymers - ANSWER-large compound formed from combinations of many monomers
the importance of clay - ANSWER-critical to solving the proximity problem-the clay is
positively charged with iron and zinc. the monomers were negatively charged and
attracted to the clay
protobionts - ANSWER-small chemical structures that form spontaneously with
hydrophilic heads and hydrophobic tails>lipid bilayer>liposome>cells!
4 reasons we think there was originally an RNA world - ANSWER-easily forms
abiotically, can replicate itself, has hereditary information, has catalytic properties
(can act as an enzyme)
viroids - ANSWER-tiny bits of raw RNA that lack a protein coat; can contain as little
as 250 nucleotides; small circular RNA molecules that infect plants and disrupt their
growth
Morganucodon watsoni - ANSWER-early mammal who shared characteristics similar
to those of a weasel-meozoic era
Features of a Divinely Inspired Creation - ANSWER-organisms look and function
according to a design of a supreme being, species don't change
common descent - ANSWER-principle that all living things were derived from
common ancestors
transmutation of species - ANSWER-view that species can change and give rise to
new species
binomial nomenclature - ANSWER-Classification system in which each species is
assigned a two-part scientific name (Genus, Species)
Nested hierarchy of organisms - ANSWER-Kingdom, Phylum, Class, Order, Family,
Genus, Species
organizing groups by relatedness and descent
sedimentation - ANSWER-sediments deposited by water were compressed to form
stone
Questions with Correct Answers
Archeocyathids - ANSWER-Primary frame builders of Early Cambrian organic reefs,
probably suspension-feeding sponges that pumped water through holes in their
vase-shaped and bowl-shaped skeletons. close to the base of the tree of life which
can tell us a lot about animal life
1st land plants - ANSWER-Paleozoic era. probably looked similar to modern carpet
moss
1st land animals - ANSWER-fish evolved legs, started walking on land, early
amphibian tetrapod
permian extinction - ANSWER-paleozoic era ended with this. 96% of all life went
extinct. Mass extinction of insects but leaves room for adaptation.
Age of Reptiles - ANSWER-Mesozoic Era- dinosaurs ruled
1st mammals - ANSWER-Mesozoic Era- looked similar to a weasle
K-T extinction - ANSWER-mesozoic era ends with this-mass extinction of animal and
plant species in a short amount of time.
K-T boundary - ANSWER-thin band of sedimentation that represents volcanic activity
and astroidal impact. dust and ash in the atmosphere reduced light and
photosynthesis which helped lead to extinction. When the dust settled, it formed the
boundary .
Geological clock - ANSWER-5 billion years ago to the present. Humans appeared at
11:59 or 1 minute before the present
continental drift and changing geography - ANSWER-land masses moved due to
continental drift climate/oxygen levels changing
Panspermia Hypothesis - ANSWER-* Earth is continuously bombarded with material
from interstellar space, much of it consisting of organic compounds.
* These may have provided the basic building blocks of life.
2 characteristics of life - ANSWER-Stages of development & levels of organization,
replicates itself
four steps to form life - ANSWER-abiotic synthesis of organic molecules, formation of
polymers, formation of protobionts, origin of hereditary material
, Miller-Urey Experiment - ANSWER-attempted to reproduce conditions they thought
were present in early earth. Found that organic molecules can form in a strongly
reducing atmosphere.
building blocks of life based on the miller urey experiment - ANSWER-Amino Acids,
Nucleotides, Sugars, Lipids, ATP
monomers - ANSWER-small unit that can join together with other small units to form
polymers
polymers - ANSWER-large compound formed from combinations of many monomers
the importance of clay - ANSWER-critical to solving the proximity problem-the clay is
positively charged with iron and zinc. the monomers were negatively charged and
attracted to the clay
protobionts - ANSWER-small chemical structures that form spontaneously with
hydrophilic heads and hydrophobic tails>lipid bilayer>liposome>cells!
4 reasons we think there was originally an RNA world - ANSWER-easily forms
abiotically, can replicate itself, has hereditary information, has catalytic properties
(can act as an enzyme)
viroids - ANSWER-tiny bits of raw RNA that lack a protein coat; can contain as little
as 250 nucleotides; small circular RNA molecules that infect plants and disrupt their
growth
Morganucodon watsoni - ANSWER-early mammal who shared characteristics similar
to those of a weasel-meozoic era
Features of a Divinely Inspired Creation - ANSWER-organisms look and function
according to a design of a supreme being, species don't change
common descent - ANSWER-principle that all living things were derived from
common ancestors
transmutation of species - ANSWER-view that species can change and give rise to
new species
binomial nomenclature - ANSWER-Classification system in which each species is
assigned a two-part scientific name (Genus, Species)
Nested hierarchy of organisms - ANSWER-Kingdom, Phylum, Class, Order, Family,
Genus, Species
organizing groups by relatedness and descent
sedimentation - ANSWER-sediments deposited by water were compressed to form
stone
