Praxis 5442 Life Science Latest Update 100% Verified

Praxis 5442 Life Science Latest Update 100% Verified Animal Behaviors Actions animals take to survive in their environments. Examples are hibernation, migration, and instincts. Example: Birds fly south in the winter because they can find more food. Animal Structural Adaptations A characteristic in a plant or in an animal's body that helps it to survive in its environment Biomolecules also called biological molecule, any of numerous substances that are produced by cells and living organisms. Biomolecules have a wide range of sizes and structures and perform a vast array of functions. The four major types of biomolecules are carbohydrates, lipids, nucleic acids, and proteins. Carbohydrates an organic compound such as sugar or starch, and is used to store energy. Like most organic compounds, carbohydrates are built of small, repeating units that form bonds with each other to make a larger molecule. In the case of carbohydrates, the small repeating units are called monosaccharides. Cell Basic unit of life Cell Membrane a biological membrane that separates the interior of all cells from the outside environment which protects the cell from its environment. The cell membrane consists of a lipid bilayer, including cholesterols that sit between phospholipids to maintain their fluidity at various temperatures. Cell Wall structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism. Cellular Reproduction the process by which a parent cell divides into two or more daughter cells. Cell division usually occurs as part of a larger cell cycle. Cellular Respiration the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water. Characteristic of Viruses A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. General characteristics: 1) attachment; 2) penetration; 3) uncoating; 4) replication; 5) assembly; 6) release