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A 20 mile band that surrounds the earth and contains all life is known as the __________. T or F Ancient Earth’s atmosphere consisted of a lot of oxygen
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Biosphere False - very little oxygen
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Earth’s early atmosphere contain very little ________gas? How many years ago did the first organism(protocells) appear on earth? ___ billion years ago
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Oxygen - 21% 3.5 to 3.9 billion years ago
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What is the process that occurs in all living things that produces CO 2 ? Name 1 of the 2 types of dating discussed in the chapter?
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Relative or radiometric
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What part of our atmosphere do planes fly in ? How old is the earth? 3.8 billion years old 4.2 billion years old 4.6 billion years old or 4.6 million years old
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4.6 billion years old
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What part of the atmosphere contains most of the earth’s air currents? T or F Only a small fraction of all the species exist today about 99% species of species are extinct
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True
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What layer of the earth contains the ozone? Where in the United States is there a great example of sedimentary rocks. It’s a great example of relative dating. Yellowstone New Jersey Yosemite Grand Canyon
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Grand canyon
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Do clouds and snow reflect or absorb sunlight? In the grand canyon where would the oldest fossils been found. TOP MIDDLE BOTTOM
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Reflects - cooling the Earth At the bottom
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True or False The earth is closest to the sun in the summer On the geological time scale what era did humans evolve? Precambrian Paleozoic Mesozoic Cenozoic
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cenozoic
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Another name for zero degrees latitude is Vertebrates first evolve in the _________era. Precambrian Paleozoic Mesozoic Cenozoic
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paleozoic
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Why does the equator get so much rain? T or F In the Precambrian era only unicellular prokaryotes exist
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At zero degrees the equator heats up fast and the heat rises as it cools it releases rain.. False- Multicellular eukaryotes
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The Great Basin Desert in the U.S. is a desert. How does a mountain range develop this dry condition? The idea that nonliving material can produce life. Biogenesis Spontaneous generation Spontaneous combustion
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On the west side of the mountain moisture is released as it climbs east side-dry air comes down an takes moisture out of the earth Spontaneous generation
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Flies Meat Maggots Covered jar June 21 In Redi’s experiment what was used as the independent variable?
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Towards Covered jars
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Why did scientist Charles Keeling take a reading of CO 2 levels in Hawaii ? Prior to life on earth simple organic molecules evolved into complex organic molecules. Which are carbs, nucleic acids and_____.
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Proteins
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Why do CO 2 levels rise during the winter? What era did dinosaurs roam the earth? Precambrian Paleozoic Mesozoic Cenozoic
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Mesozoic
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Name one greenhouse gases. What era did life first evolve ? Precambrian Paleozoic Mesozoic Cenozoic
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CO2, water vapor, CFC’s methane and nitrous oxide Precambrian
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Where do CFC’s come from? When all of the land masses were one it was called___?
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Aerosol cans, air conditioners, refrigerators Pangaea
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Redi Pasteur Spalinzini Miller & Urey Who was the first scientist to disprove spontaneous generation? (of macro organisms)
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-carpool -bicycle -lower your housing heat -plant trees -insulate the house Francesco Redi
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Redi Pasteur Spalinzini Miller & Urey he What scientist disproved spontaneous generation of microorganisms?
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Absorbs UV light Louis Pasteur
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T or F UV light can change our genetic material. According to Haldane & Oparin what triggered life in the oceans?
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Sun, light, and heat
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What do CFC’s do in an aerosol cans ? 21 34 Who proved Haldane’s & Oparin’s hypothesis that life began in the oceans? Redi & Pasteur Aristotle & Newton Miller & Urey Martin & Gaccione
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Used as propellants Miller and Urey
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True or False As warm air rises, it cools and releases water vapor. 12 34 Why did scientists think that the first true cells were anaerobic?
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True Early earth lacked oxygen
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What gas makes up most of the earth’s atmosphere? What era is know as an explosion of life? Precambrian Paleozoic Mesozoic Cenozoic
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en - 78% Paleozoic
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The thinning of the ozone layer occurs over ____ regions and may take _____ years to reverse.? 1 3 2 4 How did the first autotrophs make their food? Chemosynthesis or photosynthesis
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chemosynthesis
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The deflection of winds moving along the surface of the Earth is called the _____ Effect. Who hypothesized that the earth is 200,000 years old based on the sedimentation rate of the Po river Da Vinci Archbishop Usher Galileo Gaccione
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Da Vinci
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Biogenesis Spontaneous generation Spontaneous combustion The thought that life can only come from life is called ___.
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absorb carbon dioxide. Question 31 Answer Biogenesis
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Who was the scientist that used a curved neck flask to disprove spontaneous generation of microorganisms? Redi Pasteur Aristotle Newton Miller Urey
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Louis Pasteur
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When a fossil is formed it has 100% C 14. What is it called when the fossil has 50% C 14 & 50% C 12.
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Half - life
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What organism evolved first? eukaryotes prokaryotes protocells
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Protocells
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Who conducted the experiment below? 1 3 2 4 Newton Pasteur Aristotle Redi Miller Urey
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Francesco Redi
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Who conducted the experiment below? 12 34 Redi Pasteur Aristotle Newton Miller Urey
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Louis Pasteur
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What type of dating is shown in this graph? Relative Radiometric Carbon 14
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Radiometric dating
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Microsphere & coacervates are examples of ________ Protocells Prokaryotes Eukaryotes
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Protocells
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Protocells & Prokaryotes lack _____. Cytoplasm DNA Organelles Cell membrane
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Organelles
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Who disproved spontaneous generation of micro organism ?
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Louis Pasteur
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Who disproved spontaneous generation of macro organism?
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Redi
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