Biology short answer and completion – Flashcards
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The ____ is the chamber of heart that recived blood from th body
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Atrium
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Sea turtles must come to the surface regularly to breathe because they rely on ______ for gas exchange
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Lungs
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Chemical digestion is carried out by _______ secreted by the digestive track
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Enzymes
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Carbon dioxide cannot diffuse into the blood from an animal's cells unless the blood has a _______ concentration of carbon dioxide
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Lower
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Animals that you there could most likely have a _______ or similar specialized organ as part of their digestive track
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Rumen
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Leeches are classified as _______ because they obtain food by feeding on the blood of animals to which they are attached
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Parasites
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All animals cells contain a nucleus and membrane bound ________
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Organelles
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Animals gather information using special cells called _________
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Receptors
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Animals with backbones are called_________
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Vertebrates
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Animal bodies are ________ , which means that they are composed of many cells
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Multicellular
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Sexual reproduction helps maintain _______ diversity in populations
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Genetic
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What for characteristics are shared by both sponges and humans?
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Multicellular, heterotrophic, eukaryotic, no cell walls
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What is the purpose of feedback inhibition?
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It's like a negative feedback loop. It helps your body maintain homeostasis
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What is a heterotroph?
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Han organism that eats other organisms to obtain nutrients
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What two fundamental characteristics distinguish animals from plants?
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Eukaryotic; no cell wall
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When scientist use a _____ for an organism, they can be certain they are all discussing the same one
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Scientific Name
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The animals Panthera Leo (lion) and ________ tigris belong to the same genius
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Panthera
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The use of a two-part scientific name for organisms is called _______ nomenclature
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Binomial
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In systematics, different classes of organisms might be grouped into a ________ which is the next Linnaean category
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Phylum
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In Linnaeus's system of classification, the two smallest categories are genus and ________
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Species
