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- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/General_Biology_2e_(OpenStax)/02%3A_Unit_II-_The_Cell/2.03%3A_MetabolismCellular processes require a steady supply of energy. From where, and in what form, does this energy come? How do living cells obtain energy, and how do they use it? This chapter will discuss differen...Cellular processes require a steady supply of energy. From where, and in what form, does this energy come? How do living cells obtain energy, and how do they use it? This chapter will discuss different forms of energy and the physical laws that govern energy transfer. This chapter will also describe how cells use energy and replenish it, and how chemical reactions in the cell are performed with great efficiency.
- https://bio.libretexts.org/Courses/Folsom_Lake_College/BIOL_440%3A_General_Microbiology_(Panoutsopoulos)/04%3A_Microbial_Growth_and_Metabolism/4.04%3A_Microbial_Metabolism/4.4.01%3A_Energy_Matter_and_EnzymesCellular processes such as the building or breaking down of complex molecules occur through series of stepwise, interconnected chemical reactions called metabolic pathways. The term anabolism refers t...Cellular processes such as the building or breaking down of complex molecules occur through series of stepwise, interconnected chemical reactions called metabolic pathways. The term anabolism refers to those endergonic metabolic pathways involved in biosynthesis, converting simple molecular building blocks into more complex molecules, and fueled by the use of cellular energy.
- https://bio.libretexts.org/Courses/American_River_College/BIOL_400%3A_Principles_of_Biology_(Wolfe)/02%3A_Untitled_Chapter_2/06%3A_Metabolism/6.01%3A_Energy_and_MetabolismCellular processes such as the building and breaking down of complex molecules occur through stepwise chemical reactions. Some of these chemical reactions are spontaneous and release energy, whereas o...Cellular processes such as the building and breaking down of complex molecules occur through stepwise chemical reactions. Some of these chemical reactions are spontaneous and release energy, whereas others require energy to proceed. Just as living things must continually consume food to replenish what has been used, cells must continually produce more energy to replenish that used by the many energy-requiring chemical reactions that constantly take place.
- https://bio.libretexts.org/Courses/Chemeketa_Community_College/Cell_Biology_for_Allied_Health/11%3A_Energy_and_Metabolism/11.02%3A_Energy_and_MetabolismCellular processes such as the building and breaking down of complex molecules occur through stepwise chemical reactions. Some of these chemical reactions are spontaneous and release energy, whereas o...Cellular processes such as the building and breaking down of complex molecules occur through stepwise chemical reactions. Some of these chemical reactions are spontaneous and release energy, whereas others require energy to proceed. Just as living things must continually consume food to replenish what has been used, cells must continually produce more energy to replenish that used by the many energy-requiring chemical reactions that constantly take place.
- https://bio.libretexts.org/Courses/Clinton_College/BIO_403%3A_Microbiology_(Neely)/04%3A_Microbial_Growth_and_Metabolism/4.04%3A_Microbial_Metabolism/4.4.01%3A_Energy_Matter_and_EnzymesCellular processes such as the building or breaking down of complex molecules occur through series of stepwise, interconnected chemical reactions called metabolic pathways. The term anabolism refers t...Cellular processes such as the building or breaking down of complex molecules occur through series of stepwise, interconnected chemical reactions called metabolic pathways. The term anabolism refers to those endergonic metabolic pathways involved in biosynthesis, converting simple molecular building blocks into more complex molecules, and fueled by the use of cellular energy.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Principles_of_Biology/01%3A_Chapter_1/09%3A_How_cells_obtain_energy/9.03%3A_MetabolismThe reaction that harvests the energy of a sugar molecule in cells requiring oxygen to survive can be summarized by the reverse reaction to photosynthesis. A metabolic pathway is a series of chemical ...The reaction that harvests the energy of a sugar molecule in cells requiring oxygen to survive can be summarized by the reverse reaction to photosynthesis. A metabolic pathway is a series of chemical reactions that takes a starting molecule and modifies it, step-by-step, through a series of metabolic intermediates, eventually yielding a final product.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/12%3A_Cancer/12.10%3A_Cancer-_The_Causes_and_Prevention_of_CancerThis page discusses how oxidative damage from metabolic by-products significantly influences aging and contributes to diseases like cancer. It highlights that antioxidants from fruits and vegetables c...This page discusses how oxidative damage from metabolic by-products significantly influences aging and contributes to diseases like cancer. It highlights that antioxidants from fruits and vegetables can help mitigate this damage, but many people don't consume enough. It also notes major cancer risk factors such as smoking and poor diet.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/04%3A_Cell_Metabolism/4.11%3A_MetabolismThis page explains that all living organisms rely on energy and matter, processed through metabolism, which includes catabolism (breaking down molecules) and anabolism (building larger molecules). Aut...This page explains that all living organisms rely on energy and matter, processed through metabolism, which includes catabolism (breaking down molecules) and anabolism (building larger molecules). Autotrophs, like plants, create organic molecules via photosynthesis, whereas heterotrophs, such as humans, obtain energy by consuming organic matter.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/04%3A_Cell_Metabolism/4.12%3A_Intermediary_MetabolismThis page discusses how cells primarily utilize glucose for energy, although other nutrients like fats and proteins can also be metabolized to produce ATP. It highlights the metabolic pathways connect...This page discusses how cells primarily utilize glucose for energy, although other nutrients like fats and proteins can also be metabolized to produce ATP. It highlights the metabolic pathways connecting these different energy sources and emphasizes the necessity of obtaining certain unsaturated fats and essential amino acids from dietary sources.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/15%3A_The_Anatomy_and_Physiology_of_Animals/15.03%3A_Circulatory_Systems/15.3K%3A_Animal_Circulatory_SystemsThis page outlines the components and challenges of efficient circulatory systems, highlighting the differences across species. It notes that fish have less efficient systems due to pressure loss in g...This page outlines the components and challenges of efficient circulatory systems, highlighting the differences across species. It notes that fish have less efficient systems due to pressure loss in gills, while squids use separate pumps. Amphibians possess three-chambered hearts with some blood mixing, whereas lizards have a muscular septum to enhance separation.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/15%3A_The_Anatomy_and_Physiology_of_Animals/15.11%3A_Behavior/15.11.08%3A_Circadian_Rhythms_in_Drosophila_and_MammalsThis page explores circadian rhythms in eukaryotes and some microbes, highlighting daily cycles in gene expression and behavior controlled by light-activated clock proteins. In Drosophila, distinct cl...This page explores circadian rhythms in eukaryotes and some microbes, highlighting daily cycles in gene expression and behavior controlled by light-activated clock proteins. In Drosophila, distinct clocks assist in adapting to seasonal changes, influencing behaviors like reproduction. Mammalian rhythms are regulated by a master clock in the suprachiasmatic nucleus, demonstrating parallels across species.
