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Light Acquisition02:16

Light Acquisition

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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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Water and Mineral Acquisition02:34

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Specialized tissues in plant roots have evolved to capture water, minerals, and some ions from the soil. Roots exhibit a variety of branching patterns that facilitate this process. The outermost root cells have specialized structures called root hairs that increase the root surface, thus increasing soil contact. Water can passively cross into roots, as the concentration of water in the soil is higher than that of the root tissue. Minerals, in contrast, are actively transported into root cells.
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Routes of Persuasion02:20

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Persuasion is the process of changing our attitude toward something based on some kind of communication. Much of the persuasion we experience comes from outside forces. How do people convince others to change their attitudes, beliefs, and behaviors? What communications do you receive that attempt to persuade you to change your attitudes, beliefs, and behaviors?
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Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.
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Genome Size and the Evolution of New Genes03:21

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While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
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The Scientific Method03:50

The Scientific Method

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Chemistry is an empirical science. Scientists often pose questions to understand the chemistry in everyday life and seek answers to these questions. To achieve this, scientists follow a definitive series of steps that together make up the Scientific Method. This approach involves making observations, asking questions, building a hypothesis, conducting experiments, analyzing results, and forming a conclusion. 
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Experts Question Recent Pharma Acquisitions

    Cancer Discovery
    |February 1, 2019
    PubMed
    Summary

    Major pharmaceutical companies acquired biotech firms, but this is unlikely to change cancer drug development focus. Experts anticipate these deals may not be profitable and could lead to increased drug prices.

    Area of Science:

    • Oncology
    • Pharmaceutical Industry Analysis

    Background:

    • Recent high-profile acquisitions include Bristol-Myers Squibb's purchase of Celgene and Eli Lilly's acquisition of Loxo Oncology.
    • These strategic moves by major pharmaceutical players signal significant consolidation within the oncology sector.

    Discussion:

    • The acquisitions are not expected to fundamentally alter the trajectory of cancer drug development pipelines.
    • Industry experts express skepticism regarding the long-term profitability of these mergers and acquisitions.

    Key Insights:

    • Despite substantial investment, the profitability of these acquisitions remains uncertain.
    • A potential consequence of these deals is an anticipated short-term increase in cancer drug pricing.

    Outlook:

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    • The long-term financial viability and strategic impact of these acquisitions require further monitoring.
    • Future market dynamics will be influenced by the integration of acquired assets and the success of ongoing research and development efforts.