Campbell Biology: Concepts & Connections

Key differences between 8th and 7th editions

• Time lapse between current and previous publications: 3 years (2014 vs 2011).
• The First edition of Campbell Biology Concepts & Connections was published in 1994.
• In the Eighth Ed. each chapter offers Scientific Thinking modules.
• Chapter 3:
• New section 3.9 "Scientific studies document the health risks of trans fats"
• Module 3.14 "A protein’s functional shape results from four levels of structure"
• Chapter 4:
• New diagrams of animal and plant cells.
• Chapter 5:
• Module 5.7 "Research on another membrane protein led to the discovery of aquaporins" specifies the discovery of aquaporins and presents data from a study that helped identify their function.
• Chapter 6:
• New figure and expanded explanation of ATP synthase.
• Chapter 7:
• Module 7.9 "The light reactions take place within the thylakoid membranes"
• Module 7.13 "Rising atmospheric levels of carbon dioxide and global climate change will affect plants in various ways" explores various ways that are used to test the effects of rising atmospheric CO2 levels on plant growth and presents results from a study on poison ivy growth.
• Chapter 13:
• New chapter introduction features the role that evolution plays in thwarting human attempts to eradicate disease
• Module 13.4 "Homologies provide strong evidence for evolution" collects evidence from homologies, including an example of pseudogenes.
• Scientific Thinking module "Fossils of transitional forms support Darwin's theory of evolution".
• Chapter 16:
• New introduction on human microbiota
• Module 16.11 "Stomach microbiota affect health and disease" presents new hypothesis about a possible connection between H. pylori and obesity.
• Chapter 17:
• Module 17.3 Haploid and diploid generations alternate in plant life cycles
• Module 17.5 "Pollen and seeds are key adaptations for life on land" emphasizes pollen and seeds as key adaptations for terrestrial life.
• Chapter 18:
• Module 18.3 "Animals can be characterized by basic features of their body plan" illustrates features of the animal body plan.
• Module 18.16 " Invertebrate diversity is a valuable but threatened resource" emphasizes the value of invertebrate diversity.
• Chapter 19:
• Module 19.9 "Primates include lemurs, monkeys, and apes" updates the story of hominin evolution, including the recently described Australopithecus sediba.
• Chapter 20:
• Module 20.1 "An animal's form is not the perfect design" discusses the looped laryngeal nerve in vertebrates to show that a structure in an ancestral organism can become adapted to function in a descendant organism without being perfected.
• Scientific Thinking module "Well-designed studies help answer scientific questions".
• Chapter 23:
• Module 23.6 "What causes heart attacks?" introduces clinical trials investigating the hypothesis that heart attacks are caused by the body’s inflammatory response.
• Chapter 26:
• Connection section "Hormones can promote social behaviors".
• Chapter 27:
• New chapter introduction on viral STDs.
• Module 27.16 "Human pregnancy is divided into trimesters"
• Chapter 28:
• New material on genetic risk for developing Alzheimer’s disease, the long-term consequences of traumatic brain injury, and why antidepressants may not be effective.
• Scientific Thinking module "Published data are biased toward positive findings"
• Chapter 32:
• Module 32.3 "Transpiration pulls water up xylem vessels"
• Chapter 34:
• Module 34.2 "The science of ecology provides insight into environmental problems"
• Chapter 35:
• Module 35.7 "Animal movement may be a response to stimuli or require spatial learning" discusses whether animal movement is a response to stimuli or requires spatial learning.
• Module 35.22 "Jane Goodall revolutionized our understanding of chimpanzee behavior"
• Chapter 36:
• Module 36.6 "Some populations have boom-and-bust cycles"
• Chapter 37:
• Module 37.9 "Food chains interconnect, forming food webs" explores the interconnection of food chains and food webs.
• Module 37.11 "Some species have a disproportionate impact on diversity"
• Chapter 38:
• Module 38.11 "The Yellowstone to Yukon Conservation Initiative seeks to preserve biodiversity by connecting protected areas"