David Ruse Gardening High School
Component 9. a few Blueprint of Life
Biology Notes 2013
Helen Ying 19/03/2013
By Helen Ying © 2013 Biology Paperwork – HSC Course 2013 MODULE being unfaithful. 3 – BLUEPRINT OF LIFE 1 . Outline the effect on the progression of plant life and animals of: a. Changes in physical conditions inside the environment u Rising and falling marine levels – land and ice connections across regions have affected distribution and therefore evolution once these connections disappeared and populations were isolated in the main population. o Fossil evidence indicates mass extinctions resulting from changes in the physical environment e. g. dinosaur annihilation from meteor. o Movement of prude. As Sydney moved north, it became more dry and crops and pets needed to adjust to these new conditions. m. Changes in substance conditions inside the environment u Original anoxic environment. While primitive creatures metabolised, co2 was released. Over millions of years, carbon dioxide accumulated and at some stage, microorganisms capable of using co2 in photosynthesis evolved to become dominant. Fresh air was in that case released being a product of photosynthesis, and oxygen-using organisms became major. c. Competition for resources o Through the Cretaceous period, mammals were limited to the niches in which they will originally advanced because the globe was focused by dinosaurs. When the dinosaurs died, the mammals could populate larger areas of the earth as they got few competitors. As they inhabited these place to place, they advanced into fresh species to adapt to these new conditions. o Long lasting competition usually results in one of the species perishing out or perhaps evolution of just one of the competitive species in order to occupy a different sort of environment. Organisms surviving today have all arisen from simpler microorganisms that existed millions of years back. Evolution is the change in living organisms over various generations. Changes in the environment of living organisms can lead to the development of grow and dog species we. e. physical (e. g. temperature change), chemical (e. g. enhancements made on water salinity) or competition (e. g. more competition for resources). All organisms possess a set of prevalent characteristics mainly because they all evolved from the same ancestor: o They each have a similar chemistry – mainly made from carbon, fresh air, hydrogen and nitrogen, linked to form proteins, fats, carbs and nucleic acids. um They are filled up with water. um They all have the same fundamental mobile structure – they are all made of cells plus the cell walls have a similar chemical framework. o They each use DNA and RNA as a similar basic kind of genetic materials.
By Helen Ying © 2013 o to They all (except chemosynthetic bacteria) use digestive enzymes made of necessary protein to control all their chemical reactions. They each use respiration to make energy available in cellular material.
2 . Identify, using particular examples, how a theory of evolution is usually supported by this areas of research: a. Palaeontology, including fossils that have been viewed as transitional varieties o Palaeontology is the research of fossils. o Fossils provide direct evidence of previous life. u The idea of difference in organisms over time is maintained palaeontological facts. o Transitional forms u The series in which fossils are put down in rock demonstrates the order in which these people were formed. b. Biogeography to Biogeography is the study from the geographical distribution of microorganisms, both living and vanished. o The Darwin-Wallace theory of evolution proposes that in order for a brand new species to form, a group must first be isolated through the main human population. o Darwin's Galapagos finches: different island destinations had different environments and the finch masse evolved as time passes to adapt to their specific environments and thus became distinct species. c. Comparative embryology o The embryos of several organisms are similar, suggesting that they all originated from a common ancestral.
o Similarities in early...