Biology is designed for multi-semester biology courses for science majors. It is grounded on an evolutionary basis and includes exciting features that highlight careers in the biological sciences and everyday applications of the concepts at hand. To meet the needs of today’s instructors and students, some content has been strategically condensed while maintaining the overall scope and coverage of traditional texts for this course. Instructors can customize the book, adapting it to the approach that works best in their classroom. Biology also includes an innovative art program that incorporates critical thinking and clicker questions to help students understand—and apply—key concepts.

By the end of this section, you will be able to:Describe the four major types of lipidsExplain the role of fats in storing energyDifferentiate between saturated and unsaturated fatty acidsDescribe phospholipids and their role in cellsDefine the basic structure of a steroid and some functions of steroidsExplain the how cholesterol helps to maintain the fluid nature of the plasma membrane

By the end of this section, you will be able to:Describe the four major types of lipidsExplain the role of fats in storing energyDifferentiate between saturated and unsaturated fatty acidsDescribe phospholipids and their role in cellsDefine the basic structure of a steroid and some functions of steroidsExplain the how cholesterol helps to maintain the fluid nature of the plasma membrane

This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"Chickens are an important source of proteins for humans. Chicken diets are therefore formulated to enhance production efficiency and human health. But few studies have explored how industrial production system parameters affect certain pathogens in the chicken gut, such as Campylobacter, the leading cause of human foodborne bacterial gastroenteritis. A recent study examined how the presence of Campylobacter in the chicken gut microbiome varied across three different production systems, one based on a normal production system, and two based on higher welfare with and without omega-3. The standard production system produced a significantly different microbial composition than the other systems, with bacteria of the genus Alistipes playing a more prominent role in the gut microbiome of chickens from the normal production system, and Eisenbergiella playing a more prominent role in the other two production systems. These bacteria play active roles in energy metabolism and nutrient uptake..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.