30 Questions
When did life on earth begin?
More than 3 billion years ago
What is the basic component of all living things?
Cells
What is the characteristic of unicellular organisms?
They carry out all life processes
What is the characteristic of multicellular organisms?
They are composed of many cells
What was the first event in the timeline of evolution of life on earth?
Evolution of organic molecules
When did the oceans form on earth?
About 3.8 billion years ago
What is the process called when an organism grows in size and number of cells?
Intussusception
What is the basic unit of life in an organism?
Cell
What is the ability of a living organism to live in harmony with other organisms in the environment?
Adjustment, Integration, and Coordination
What is the living matter in a cell composed of?
Cell membrane, cytoplasm, and nucleus
Who is the evolutionist who talked about the process of evolution to explain how life developed?
Charles Darwin
What is the process of an organism producing new individuals closely resembling them?
Reproduction
What type of molecules were present in the Earth's atmosphere during the Precambrian period?
Both inorganic chemical compounds and organic molecules
What is the energy source that led to the formation of organic molecules from inorganic chemical compounds?
Ultraviolet light, electricity, or heat from below the earth's surface
What type of organisms are believed to have primitive lipid membranes?
Prokaryotes
What is the primary source of energy and molecules for prokaryotic heterotrophic cells?
Chemicals from outside sources
What was the 'primordial soup' composed of around 3.5-3.8 billion years ago?
Organic molecules such as amino acids and nucleotide bases
What was the advantage of cells that could produce their own organic molecules from simple sources?
They were more likely to survive
What is the main idea behind the Special Creation Theory?
Life is created by a Supreme Being
What was the believe about the origin of life in ancient times?
Life originated from non-living matter
What is the phrase that means 'the development of an organism expresses all the intermediate forms of its ancestors throughout evolution'?
Ontogeny recapitulates phylogeny
What is the main idea behind the Biogenetic Theory?
Living organisms developed from other living organisms
What is the theory that most biologists believe in, regarding the origin of life?
The Abiogenetic Synthesis Theory
What was the result of the experiments made by different scientists regarding the Spontaneous Generation Theory?
The theory was proven to be incorrect
What is an adaptation?
An inherited trait that helps an organism survive and reproduce
What is the mechanism by which evolution occurs?
Natural selection
What is the term evolution specifically referring to in biology?
A generation-to-generation change in the proportion of different inherited genes
What is an example of evolution in action?
Beetles changing color over time
How is modern biology changing human's everyday life?
By improving the treatment of certain mental illnesses
What is a consequence of environmental issues such as water and air pollution?
People are becoming more aware of their relationship to the biosphere
Explore the evolution of life on Earth, from its origins over 3 billion years ago to the diversity of complex organisms today. Identify key events in the history of life and recognize the importance of understanding this concept.
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