WorksheetsChapter 14 - History of the Earth (Adv)
Total questions: 25
Worksheet time: 13mins
Biogenesis is
atoms of an element that have different numbers of neutrons
method that organisms use to obtain energy from inorganic substances
principle which states that all living things came from other living things
absorbs ultraviolet light
Ozone ...
absorbs ultraviolet radiation
length of time it takes one-half of a radio-active isotope to decay to a more stable form
atoms of an element that have different numbers of neutrons
method that organisms use to obtain energy from inorganic substances
Isotope is
length of time it takes one-half of a radio-active isotope to decay to a more stable form
method that organisms use to obtain energy from inorganic substances
atoms of an element that have different numbers of neutrons
principle which states that all living things must come from other living things
Half-life ...
absorbs ultraviolet radiation
length of time it takes one-half of a radio-active isotope to decay to a more stable form
atoms of an element that have different numbers of neutrons
method that organisms use to obtain energy from inorganic substances
Chemosynthesis is
length of time it takes one half-life of a radio-active isotope to decay to a more stable form
principle which states that all living things come from other living things
method that organisms use to obtain energy from inorganic substances
atoms of an element that have different numbers of neutrons
Cyanobacteria changed the early Earth's atmosphere by giving off
carbon dioxide
ammonia
hydrogen
oxygen
In Redi's experiment, the control group consisted of
jars without meat
jars covered with netting
covered jars in the sun
jars not covered with netting
Eukaryotes may have evolved from
cyanobacteria
prokaryotes and engulfed small aerobic prokaryotes
prokaryotes and engulfed small anaerobic prokaryotes
none of the above
Determining the age of a rock by comparing relative proportions of it's radio-active isotopes is called
radioactive decay
radiometric dating
isotope dating
half-lives
Scientists theorize that Earth formed
from the melting of asteroids
about 10 billion years ago
about 1 billion years ago
from collisions of space debris circling the sun
The forerunners of the first cells may have been the gathering of protein molecules into
macromolecules
isotopes
microspheres
DNA molecules
Organisms were able to live safely on dry land after
cyanobacteria made oxygen, and ozone began to form
the fifth mass extinction
continental drift stopped
archaeabacteria made oxygen, and ozone began to form
Which of the following enabled the formation of true cells?
the ozone layer
heredity
microspheres
endosymbiosis
Scientists have estimated the age of the Earth to be
about 4.6 million years old
about 10 billion years old
about 4.6 billion years old
about 100,000 years old
Radiometric dating of a charcoal sample from an ancient human dwelling was done using carbon-14. The site was dated as 17,195 years old. How many half-lives of carbon-14 does this represent?
one
two
three
four
Scientists hypothesize that Earth's early atmosphere contained substances such as
oxygen, carbon dioxide, hydrogen gas, and nitrogen
nitrogen, methane, ozone, and water vapor
methane, water vapor, oxygen, and ammonia
ammonia, hydrogen gas, water vapor, and methane
The Miller-Urey experiment used gases circulating in a chamber and electric sparks to
date the age of the Earth
produce a variety of organic compounds
produce ozone
produce cyanobacteria
An RNA molecule that can act as a catalyst and promote specific chemical reactions is called
an enzyme
DNA
a ribozyme
a protein
The first cells were most likely
aerobic heterotrophic prokaryotes
anaerobic heterotrophic eukaryotes
aerobic autotrophic eukaryotes
anaerobic heterotrophic prokaryotes
The oldest known fossil organisms are about 3.5 billion years old and are similar to
modern plants
modern cyanobacteria
modern eukaryotic bacteria
modern coacervates
Which scientists conclusively demonstrated that the principle of spontaneous generation was not correct?
Francesco Redi
Louis Pasteur
Lazzaro Spallanzani
Alexander Oparin
What theory proposes a method for the evolution of photosynthetic eukaryotic organisms from prokaryotes?
endosymbiosis
chemosynthesis
RNA replication
radioactive decay
A mechanism for heredity was necessary in order to begin
microspheres
life
RNA
proteins
Oxygen began to enter the atmosphere of the early Earth as a result of
respiration by microspheres
respiration by plants
photosynthesis by cyanobacteria
endosymbiosis of prokaryotes and eukaryotes
The total number of protons and neutrons in the nucleus is
an isotope
the mass number
the atomic number
always the same
