Praxis Elementary Education Science 5004 Latest Update Graded A+

Praxis Elementary Education Science 5004 Latest Update Graded A+ Organism A living thing Cells The basic unit of structure and function in all living things Complex Organisms Organisms that consist of many different types of cells Osmosis Water passes through the membrane to even the concentration of protein on both sides Diffusion Molecules move from a place where they are highly concentrated to one where the concentration is lower Active Transport Material moves with the help of protein energy from low to high concentration Nucleus Contains all DNA, the brain of the cell Cytoplasm Jelly-like substance outside of the nucleus where the organelles are Organelles Smaller structures within the cell that have specific roles Mitochondria Make energy in the form of ATP ATP (adenosine triphosphate) The protein making ribosomes Lysosomes Hold enzymes that can break down molecules (digestion) Vacuoles Hold water and nutrients in the cell Endoplasmic Reticula (ER) Tube which carries material from the cytoplasm to the nucleus Golgi apparatus Modifies proteins for movement through the cell Cell wall Made of cellulose and makes a firm surrounding for the cell while still allowing movement in and out Chloroplasts Contain chlorophyll and are involved in photosynthesis, using energy from the sun to produce their own food Glucose Sugar that is made for food during photosynthesis Autotrophs Creates their own food (energy) Heterotrophs Consume foot to get their energy Tissues Similarly specialized cells grouped tohether Organs Groups of similarly functioning tissues Organ System