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Cells in tissues / Christopher J Paradise; A Malcolm Campbell
New York : Momentum Press, 2016
[xiii], 50 pages. : illustration ; 24 cm.
Ký hiệu phân loại (DDC): 571.6
Two systems illustrate how individual cells of an organ system function, communicate, and coordinate activities. The digestive system breaks down and absorbs nutrients, and some specialized cells break down and absorb nutrients. The case of parietal cells in the stomach and epithelial cells in the small intestine are used to describe how cells function as a unit within organ systems, coordinating activities and communicating with one another. The endocrine system of insects affects molting and metamorphosis, and specialized cells are also important in each of these processes within that organ system. The experiments that were devised to determine the role of hormones in insect molting and metamorphosis are described. Finally, stem cells are healthy components of several different systems in animal bodies and are described in relation to a disruption in function. In this breakdown of function, cancer cells, in contrast to stem cells, can abnormally affect cell cycle regulation.
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Molecular structure and function / A Malcolm Campbell; Christopher J Paradise
New York : Momentum Press, 2016
40 pages. : illustrations ; 24 cm.
Ký hiệu phân loại (DDC): 541.22
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 with some basics about specificity of shapes and the four increasing levels of protein structure. Most of this book examines how epinephrine (adrenaline) can cause the liver to release glucose when a person experiences a fight or flight response. Whenever someone gets scared, all of their cells are bathed in epinephrine. A subset of those cells will respond directly to this hormone, and the liver cells prepare other cells for the extra energy they might need to survive. This book presents some of the data that revealed how the information of fear is carried inside liver cells. This book will also consider how and why some cell membranes are wavy. In short, this book looks at the structure/ function relationship at the molecular level
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