Biology is designed for multi-semester biology courses for science majors. It is …
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 how …
By the end of this section, you will be able to:Describe how organisms acquire energy in a food web and in associated food chainsExplain how the efficiency of energy transfers between trophic levels affects ecosystem structure and dynamicsDiscuss trophic levels and how ecological pyramids are used to model them
This resource is a video abstract of a research paper created by …
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:
"Oceanic microbiomes are critical to the global carbon cycle and to oceanic carbon and energy cycling, and the Deltaproteobacteria clade SAR324 is one of the few microbial groups inhabiting all oceanic depth zones. Although the metabolic potential of dark-zone SAR324 has been investigated, the ecology and metabolic traits of euphotic- and twilight-zone SAR324 remain unclear. To learn more, a recent study collected SAR324 from various depths of the North Pacific Subtropical Gyre. A pangenomic analysis including published genomic data revealed considerable intra-clade diversity, as indicated by the average nucleotide identity (ANI). The bacteria clustered into four ecotypes with different spatiotemporal distributions, and bacteria at different depths had different metabolic characteristics. The deep- and twilight-zone bacteria exhibited genomic and metabolic traits consistent with sulfur-based chemolithoautotrophy..."
The rest of the transcript, along with a link to the research itself, is available on the resource itself.
By the end of this section, you will be able to:Describe how …
By the end of this section, you will be able to:Describe how organisms acquire energy in a food web and in associated food chainsExplain how the efficiency of energy transfers between trophic levels affects ecosystem structure and dynamicsDiscuss trophic levels and how ecological pyramids are used to model them
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