Biology Questions and Answers with Certified Solutions

Biology Questions and Answers with Certified Solutions Diffusion The passive movement of particles from an area of high concentration to low concentration. This happens along a concentration gradient Osmosis A passive movement of water molecules through a semi permeable membrane. Water moves from an area of low solute concentration to high solute concentration Active Transport An active movement where an input of energy is required. Particles move from low concentration to high concentration Facilitated Diffusion A passive movement of particles from high to low concentration through a protein channel in a cell. Isotonic Solution The same concentration of dissolved substances. Water in = water out. Hypertonic Solution Higher concentration of solutes outside cell than inside Plasmolyse When a cell has shrunk Hypotonic Solution A cell has more solute inside than outside. Turgid Cell may explode under pressure due to a hypotonic solution. Exocytosis Movement out of a cell Endocytosis Movement into a cell Lysosome A vesicle that contains destructive/digestive chemicals Pinocytosis A form of endocytosis where a cell engulfs liquid into the cell. Phagocytosis A form of endocytosis where a cell engulfs solids into a cell Scientific question Questions that can be answered by using experiments and factual reasoning. Biology The study of living organisms and how they function. Scientific Method A method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses. Hypothesis 1st part of the scientific method experimental design Experimental design refers to how participants are allocated to the different conditions (or IV groups) in an experiment. variable factors that are kept constant or unchanging. observation The process of studying of something to gain information. inference A conclusion made up of facts and inferring knowledge. conclusion The final ending or idea of a process prediction A statement about the hypothesis qualitative observations detailed examination with your senses only quantitative observations measuring something with numbers homeostasis Balancing human or any living organisms metabolism The chemical processes occurring within a living cell or organism that are necessary for the maintenance of life heredity The genetic transmission of characteristics from