Characteristics and Classification of Living Organisms

Class fish: - Skeleton of cartilage or bone - All aquatic - Marine or freshwater Class Amphibia: - Lungs in adults - Gas exchange through skin - Aquatic and terrestrial Class Reptilia: - Ectotherms - Eggs with soft leathery shells - Mostly terrestrial Class Aves (Birds): - Terrestrial endotherms - Eggs with hard shells (calcareous) - Gas exchange assisted by air sacs Class Mammalia (Mammals): - Endotherms - Hair or fur - Give birth to live young Class Crustacea: - Mainly marine - Exoskeleton with mineral salts - Gills often present Class Arachnida: - Mainly terrestrial - 2 body parts Class Insecta: - Mostly terrestrial - Most can fly - 3 body parts Order of classification: (Domain), Kingdom, Phylum, Class, Order, Family, Genus, Species Plants food source: Photosynthesis (sunlight) Do plants have a call wall?: Yes (to maintain the structure of the plant (especially in the stem) because there are no muscles to keep the structure in place in a plant. The cell wall is made from cellulose) Do plants have a nucleus in cell?: Yes Plants carbohydrate store: Stored as starch (carbs made from glucose) Are plants single or multicellular?: multicellular Animals food source: Mainly carbs Do animals have a cell wall?: No (because it is not needed, the muscles in the animal hold the structure together) Do animal have a nucleus in cell?: Yes Animal carbohydrate storage: glycogen (glucose in the liver and muscles) Are animals unicellular or multicellular?: multicellular Fungi food source: The digestive enzymes outside of their body break down the food, then the fungi absorbs the small molecules left from digestion. (saprophytic nutrition) Do fungi have cell walls?: Yes (to protect the cell from predators, and give it its structure. The cell wall is made from chitin) Do fungi have a nucleus in cell?: Depends, one fungus has one nucleus but when two fungi find each other they combine and have two nuclei. Fungi carbohydrate storage: starch and glycogen Are fungi unicellular or multicellular?: They can go from unicellular (yeasts) to multicellular, based on the environment Bacteria food source: Dairy / meat products Do bacteria have a cell wall?: Yes (gives the bacteria structural support) Do bacteria have a nucleus in cell?: No (because they are prokaryotes (clones of the DNA don't need to leave the nucleus to find ribosomes to make proteins)) Bacteria carbohydrate storage: glucose Are bacteria unicellular or multicellular?: unicellular Protoctist food source: Photosynthesis (light) Do protoctists have a cell wall?: Some variations do, majority don't Do protoctists have a nucleus?: Yes Protoctists carbohydrate store: starch (carbs made from glucose) Are protoctists unicellular or multicellular?: unicellular Virus food source: They live off of the host cell (could be a plant, bacteria, or animal) to get their food source and energy Do viruses have a cell wall?: No (no cell wall or membrane, they have a protective coat of protein called a capsid; however when the virus makes contact with a host, the virus develops an envelope made out of lipid) Do viruses…