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WorksheetsOrigins of Life
Total questions: 24
Worksheet time: 28mins
One of the accepted scientific theories describing the origin of life on Earth is known as chemical evolution. According to this theory, which of the following events would need to occur first for life to evolve?
onset of photosynthesis
Synthesis of organic molecules
origin of genetic material
formation of the plasma membrane
Based upon the conditions of the early Earth, which forms of live most likely appeared first?
Prokaryotic and aerobic
Prokaryotic and anaerobic
Eukaryotic and aerobic
Eukaryotic and anaerobic
The Miller-Urey experiment of 1953 was designed to test the hypothesis that lightning supplied the energy needed to turn atmospheric gases into organic molecules such as amino acids. Which of the following describes why the Miller-Urey theory is widely accepted today?
Amino acids spontaneously form from molecules in the atmosphere today
Organic molecules are present today in extremely high concentrations
The process of synthesizing organic molecules from a mixture of gases has been successfully modeled in the laboratory
No other alternative hypotheses have been introduced
The diagram above shows a proposed theory of the origin of eukaryotic cells, called endosymbiosis.
Which of the following explains why cells that contained mitochondria-like organelles had an evolutionary advantage?
They were able to photosynthesize
They were able to make more use of available energy
They had more DNA
They were immune to bacterial invasion
Endosymbiotic Theory is the idea that ______ cells could have evolved from_____cells
prokaryotic, eukaryotic
eukaryotic, animal
prokaryotic, plant
eukaryotic, prokaryotic
Prokaryotic cells do not have
cell wall
nucleus
cytoplasm
ribosomes
How did one type of prokaryote get inside of another type of prokaryote
Acts as a ligand
One engulfed the other
Fused in as a vesicle
snuck in as a retrovirus
Early bacteria that could make its own energy evolved into
Mitochondria
Chloroplast
ATP
ADP
Early bacteria that could perform photosynthesis evolved into
Mitochondria
Chloroplast
ATP
ADP
Evidence for endosymbiosis includes
Mitochondria and Chloroplast are the same color
Mitochondria and Chloroplast are the same size
Mitochondria and Chloroplast are the same structure
Mitochondria and Chloroplast have the same pH
Evidence for endosymbiosis includes
Mitochondria and chloroplast have their own Lysosomes
Mitochondria and chloroplast have their own vesicles
Mitochondria and chloroplast have their own RNA
Mitochondria and chloroplast have their own DNA
Mitochondria and Chloroplast are similar to prokaryotic cells like bacteria in what way?
They have the same lifespan
They divide the same way
They are the same color
They have the same shape
According to the Endosymbiotic Theory, why are the ancestors to Eukaryotic cells Prokaryotes?
Prokaryotic cells evolved
Prokaryotic cells mutated, developing advantageous traits
Prokaryotes grew inside each other, increasing complexity
Prokaryotic cells grew together with eukaryotic organisms
Animal and Plant Cells are...
Shopkoytes
Eukaryotes
Prokaryotes
The building blocks of non-living things
