Biology Demystified: A Self Teaching Guide by Dale Layman

By Dale Layman

Advisor to realizing uncomplicated and utilized clinical details, for these who've had no longer formal education in biology. comprises greater than one hundred fifty illustrations, a pronunciation consultant, self-tests, and studies. Softcover. DLC: Biology.

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Extra resources for Biology Demystified: A Self Teaching Guide

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Since the number of positively charged protons in the nucleus always equals the number of negatively charged electrons rapidly orbiting around the nucleus, the net charge of any atom is 0. Thus, the carbon atom, which has a nucleus of charge þ6 (from the six protons), and a cloud of electrons with a charge of À6, has a net (overall) charge of 6À6 ¼ 0. ] Lying just above the atom level is the molecule. A molecule is a combination of two or more atoms held together by chemical bonds. A chemical PART 1 22 Getting Ready for Biology bond is a linkage created by the sharing or transfer of electrons between the outer surface clouds of atoms.

____________________________________________________________ 2. ____________________________________________________________ 15 PART 1 16 Getting Ready for Biology The Broken Spider Web DISORDER TABLE for Chapter 1 (Key Text Facts About Biological Disorder Beyond the Individual Organism) 1. ’’ Prominent among these concepts was the notion of Biological Order – a particular pattern associated with living things. Recall that the spotted body pattern of a giraffe was used to symbolize Biological Order within the individual organism.

This great cloud blocked most of the sunlight, killing plants and dramatically cooling Earth’s tropical climate. Plant-eating dinosaurs had nothing to eat, and died out. Thus, meat-eating dinosaurs, which could not devour plant-eating dinosaurs, became extinct as well. The mass extinction of all the dinosaurs led to the Cenozoic (sen-uh-ZOHik) or ‘‘new’’ (ceno) ‘‘life’’ (zo) Era. The Cenozoic Era is sometimes nicknamed The Age of Mammals. The reason is because during this past 65 million years or so, leading up to the present day, mammals have become the dominant animals on the Earth.

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