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totalt 30 träffar
Emergent Properties of Individual Organisms
This book begins by describing what an individual organism is, comparing preconceptions of the individual to non-standard ways of thinking about individuals. Variation in what …
Using DNA Information to Make Proteins
Many people were taught that DNA is the ""blueprint of the cell,"" but what does that really mean? If taken literally, it would reveal a static image of what the cell looks like, …
Reproduction and Cell Division
Why do some children look more like one parent than another? How can two parents with dark hair have a child with red hair? How can two dark-skinned parents have a baby that has …
Organismal Homeostasis
Organisms maintain homeostasis in a variety of ways. In the first part of this book, mammals are shown to regulate their body temperatures through homeostatic mechanisms. The data …
Properties in and of Populations
Properties of populations include age and spatial distribution, both of which emerge from actions and properties of individuals and can affect population dynamics, the changes in …
Cellular Consequences of Evolution
Once the first cell arose on Earth, how did genetic diversity arise if DNA replication and cell division generate exact copies? The answer is that neither process is perfect and …
Effects of Genetic and Pathogenic Diseases on Cells
Several genetic and pathogenic diseases are described to illustrate how diseases can and do disrupt normal molecular and cellular functions, and how those disruptions affect entire …
Ecological Homeostasis
Individual organisms contribute to nutrient cycling in ecological systems, which is shown to be a mechanism of homeostasis at that level. The phosphorus and nitrogen cycles are …
Mechanisms of Evolution
Three of the four major mechanisms of evolution, natural selection, genetic drift, and gene flow are examined. There are 5 tenets of natural selection that influence individual …
Molecular Structure and Function
One of the overarching themes in nature is that form meets function, meaning that the shape of an object determines how well the object can perform its function. This book begins …