How did life make this spectacular leap from unicellular simplicity to multicellular complexity? Nicole King has been fascinated by this question since she began her career in biology. Fossils don’t offer a clear answer: Molecular data indicate that the “Urmetazoan,” the ancestor of all animals...
A new idea about the origin of complex life turns current theories inside out. In the open access journalBMC Biology, cousins Buzz and David Baum explain their 'inside-out' theory of how eukaryotic cells, which all multicellular life - including us - are formed of, might have evolved. Scien...
Explain how life made the transition from water to land. What changes allow organisms to move on land? How do ecosystem services and species niches relate? How did organisms survive before the Great Oxygenation Event? Why did plants become multicellular?
How did life on Earth begin and evolve?The many different species of living things on Earth (and many species that are now extinct) evolved from very simple living things.Life on Earth began about 3500 million years ago.Evidence for evolution is provided by fossils and from analysis of ...
How does a cell's organelles help carry out the 6 characteristics of life? How is cell differentiation different in plants and animals? Why simple diffusion is enough for performing various life processes in unicellular organisms and why not in multicellular organisms?
Is life just a bundle of amino acids? Similarly, when, exactly, did Earth shift from a chemical world to a biological one? Is life something that can replicate itself? Something that can evolve? In probing these questions of where we come from, extremophiles, those strange survivors from ...
Explain how photosynthesis has influenced the evolution of life. Explain how exactly cellular respiration and photosynthesis work (the process). Summarize the process/ steps of photosynthesis and cellular respiration. Why did the evolution of multicellular organisms suc...
activity with an innate ability to produce a large amount of the product, it is an example of the replacement hypothesis; its action in general is not an immediate and direct response to the environment, and it facilitates the evolution not only of unicellular but also of multicellular ...
During the course of evolution, multicellular life emerged from unicellular life forms. The latter remain the dominant life form on the planet and often exist in a symbiotic or parasitic relationship with multicellular life. The nature of such relationships can have a major influence on the life ...
How does phytoplankton grow? Why did plants become multicellular? How does soil pollution affect plant growth? Why are some insects important for flowering plants? Why do ferns grow on trees? How do plants adapt to a temperate deciduous forest?