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Characteristics of Life and Biochemistry

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Across
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consist of either one or two long chains of repeating units called nucleotide, which consist of a nitrogen base attached to a sugar phosphate.
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The smallest structural and functional unit of an organism.
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Something reproduced.
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Lack a distinct cell nucleus and their DNA is not organized into chromosomes.
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A chemistry sub discipline involving the scientific study of the structure, properties, and reactions of organic compounds and organic materials.
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One sugar.
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Descent with modification.
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Organisms that make their own food.
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A molecule composed of polymers of amino acids joined together.
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Catalysts which speed up chemical reactions.
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A chemical bond formed by the sharing of one or more electrons.
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Organic molecule.
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Organisms of an ecological food chain which receive energy by consuming other organisms.
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A large complex molecule.
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An organism whose cells contain a nucleus surrounded by a membrane and whose DNA is bound together by proteins.
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The ability to maintain a constant internal environment in response to environmental changes.
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The genetic information passing for traits from parents to their offspring.
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A type of macro-molecule known as a nucleic acid.
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To use the metabolic capacities of organisms to convert some combination of light, biomass, organic compounds, gases and water into useful chemical-bond.
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The relations and interactions between organisms and their environment.