Origin of Life - Theories of Organic Evolution

<p>Life originated from non-living organic molecules (A)</p> Signup and view all the answers

<p>The formation of organic molecules from inorganic molecules (A)</p> Signup and view all the answers

<p>A stable atmosphere (A)</p> Signup and view all the answers

<p>They stimulated and hastened the evolution by breaking and making bonds (B)</p> Signup and view all the answers

<p>Around 4 million years ago (C)</p> Signup and view all the answers

<p>Natural selection (B)</p> Signup and view all the answers

<p>It provides a substrate for natural selection. (C)</p> Signup and view all the answers

<p>By introducing new alleles into a population. (C)</p> Signup and view all the answers

<p>It is impossible due to current conditions. (D)</p> Signup and view all the answers

<p>Methane (CH4) (A)</p> Signup and view all the answers

<p>It increases genetic variation. (A)</p> Signup and view all the answers

<p>It can lead to a reduction in genetic variation. (A)</p> Signup and view all the answers

<p>Diversity of life forms will remain unchanged in the future. (C)</p> Signup and view all the answers

<p>Solar energy and UV radiation. (C)</p> Signup and view all the answers

<p>Life is eternal with no known origin. (C)</p> Signup and view all the answers

<p>Theory of Panspermia (C)</p> Signup and view all the answers

<p>Those who reproduce successfully in their environment. (C)</p> Signup and view all the answers

<p>It introduces new genes into a population. (B)</p> Signup and view all the answers

<p>It determines which traits are advantageous for survival. (C)</p> Signup and view all the answers

<p>Life originates from pre-existing life. (C)</p> Signup and view all the answers

<p>It does not account for the formation of Earth. (D)</p> Signup and view all the answers

<p>There is no evidence of life on other planets. (B)</p> Signup and view all the answers

<p>A population of birds evolving after being isolated on an island. (D)</p> Signup and view all the answers

<p>Genetic variation (D)</p> Signup and view all the answers

<p>The Huttonian concept of geologic time. (C)</p> Signup and view all the answers

<p>Jean Baptist de Lamarck (B)</p> Signup and view all the answers

<p>Isolated populations facing geographical barriers. (C)</p> Signup and view all the answers

<p>Life arising from non-living materials. (D)</p> Signup and view all the answers

<p>The ability to produce fertile offspring when interbreeding. (C)</p> Signup and view all the answers

<p>Theory of Spontaneous Generation (D)</p> Signup and view all the answers

<p>Availability of fossil records. (C)</p> Signup and view all the answers

<p>By preventing mating between individuals of the same population. (B)</p> Signup and view all the answers

<p>It does not account for the origin of spores. (C)</p> Signup and view all the answers

<p>It includes the hypothesis of abiogenesis. (C)</p> Signup and view all the answers

The process of change in living organisms over time, resulting in the diversity of life we see today.

The most widely accepted theory of the universe's origin, suggesting it began from a single point of immense energy.

The formation of our planet around 10 billion years after the Big Bang, initially a hot, gaseous mass.

The initial atmosphere of Earth was primarily composed of water vapor, methane, carbon dioxide, and ammonia.

The process by which inorganic molecules in the early Earth's atmosphere formed complex organic molecules.

The idea that life originated from non-living organic molecules like proteins and DNA in the early Earth.

The now-discredited theory that life could arise spontaneously from non-living matter.

After the first life forms appeared, they underwent evolution, gradually diversifying into the various forms we see today.

This theory states that life was created by a divine being out of nothing, with all living organisms being created as they are today.

This theory proposes that life originated from spores or microscopic life forms that arrived on Earth from outer space.

This theory suggests that life arises from non-living matter, such as decaying organic material.

This experiment, conducted by Louis Pasteur, disproved the theory of spontaneous generation by showing that life only arises from existing life.

This theory, also known as the Theory of Abiogenesis, proposes that life originated from non-living matter through a series of chemical reactions on early Earth.

The modern theory of abiogenesis suggests non-living materials could give rise to life under the specific conditions present on early Earth.

Although the Panspermia theory was initially supported by the discovery of microfossils in meteorites, no mechanism for the transfer or survival of life in space has been found, making it a less accepted explanation.

The Chemical Evolution Theory, unlike other theories, offers a scientifically testable explanation for the origin of life and is supported by evidence gathered through research.

The origin of life from non-living matter.

The theory suggesting life arose from inorganic molecules through chemical reactions in a reducing atmosphere.

An early Earth atmosphere rich in gases like methane (CH4) and ammonia (NH3) that favored chemical reactions.

Energy sources like solar and UV radiation provided the energy for chemical reactions to form organic molecules.

The idea that life has always existed and will always exist, without a beginning or end.

The theory does not explain the formation of Earth before life. It also doesn't account for the evolution of life.

The theory that modern life forms evolved from earlier ones through gradual changes over time.

Darwin did not invent organic evolution, but he provided strong evidence and a mechanism for it through natural selection.

The transfer of genetic material between different populations, increasing genetic variation.

Random changes in gene frequencies within a population, especially significant in small populations.

A group of organisms that can interbreed and produce fertile offspring, sharing a common gene pool.

The process of forming new species through isolation and genetic divergence.

Factors that prevent interbreeding between species, such as anatomical differences or timing of mating.

The differences in genes among individuals within a population. These differences can be caused by mutations, gene flow, or recombination.

The process by which organisms with traits better suited to their environment survive and reproduce more successfully, passing those traits to their offspring.

A random change in the DNA sequence. Mutations can be harmful, beneficial, or neutral, and can contribute to genetic variation.

The ability of an organism to survive and reproduce in its environment. Organisms with higher fitness are more likely to pass on their genes.

The difference in reproductive success among individuals in a population. Some individuals reproduce more successfully than others, passing on their traits.