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Adv. 7th Grade Sci.

Final Exam

Homeostasis The ability of an organism or cell to maintain equilibrium.
Photosynthesis The chemical reaction in plants that occurs when sunlight is captured and converted to chemical energy.
Respiration The opposite of photosynthesis.
Anaerobic Respiration The breaking down of sugar and other organic compounds with the absence of oxygen.
Mitosis The process in which the nucleus in plant and animal cells divides to form two new nuclei.
Meiosis Chromosome pairs separate and are distributed into new sex cells.
Replication The process when DNA copies itself.
Organic Chemical A chemical that has carbon except CO2 and CO.
Inorganic Chemical Any chemical that doesn't have carbon except CO2 and CO.
Species A group of individuals having common characteristics.
Variation A difference in structure from the same species.
Adaptation The alteration of an organism so it has a better chance of survival.
Traits A characteristic.
Fossils Any remains, impression, or trace of a living thing of a former geologic age.
Mold A hollow form of a particular shape of something.
Cast Something formed by a material being poured into it.
Relative Dating Dating a fossil by which layer it lies in. The deeper the layer, the older the fossil.
Absolute Dating Using the half-life of radioactive elements trapped in fossils to determine their age.
Gradualism A theory that a species evolves over a slow and continuous time.
Punctuated Equilibria A theory that new species evolve suddenly over relatively short periods of time and then evolve more slowly over longer periods of time.
Natural Selection Traits that organisms have that enable them to adapt to specific environmental pressures.
Over Production Production in excess of need.
Petrification Of Fossils Converting fossils into a stone.
Competition The struggle between different organisms to meet their needs.
Osmosis The diffusion between fluids.
Diffusion The act of a substance moving from a higher concentrated area to a lower concentrated area.
Active And Passive Transport Active transport is when energy is needed to allow a substance through the membrane of a cell. Passive transport is when no energy is needed to allow a substance through the membrane of a cell.
Enzyme Proteins that are a biochemical catalyst produced by living cells.
Catalyst A chemical that speeds up a chemical reaction.
Autotroph Makes its own food-Producer
Heterotroph Doesn't make its own food-Consumer
Decomposer An organism that breaks down the cells of dead plants and animals into simpler substances.
Genotype The total number of genes transmitted from a parent to an offspring.
Phenotype The appearance of an organism depending on the genotype.
Heterozygous Having unsimiliar genes for any hereditary characteristic.
Homozygous Having identical pairs of genes for any hereditary characteristic.
Allele Any form of a gene usually through mutation.
Probability The chance that something will happen.
Genetic Code The sequence of nucleotides in DNA or RNA that determine the specific amino acid sequence in the synthesis of proteins.
Chloroplast Organelles that produce the cells food(glucose) using the sun.
Chlorophyll The green coloring of leaves that is needed to produce carbohydrates during photosynthesis.
Phloem Carries synthesized nutrients to all parts of a plant in vascular plants.
Xylem Carries water and dissolved minerals from the roots to the plant in vascular plants.
Gymnosperm A vascular plant that has seeds that aren't enclosed in the ovary.
Angiosperm A plant that has its seeds enclosed in the ovary.
Germination To start growing from a seed.
Cerebrum The largest part of the brain that controls voluntary movements and mental actions.
Cerebellum It coordinates voluntary movements, posture, and balance. It is located under the cerebrum.
Stimuli Something that encourages an activity or process to begin, increase, or develop.
Vaccine A preparation to that causes immunity to a specific disease.
Compound Composed of two or more elements.
Homogeneous Mixture A substance that has a uniform composition and properties.
Heterogeneous Mixture A substance that doesn't have a uniform compostion and properties.
Viscosity The property of a fluid that resists the force tending to cause the fluid to flow.
Boyle's Law The inverse variation of the volume of gas with its pressure if the temperature and the number of particles are constant.
Charles Law The direct proportion of the volume of gas to its temperature(kelvins)if the pressure and the number of particles of the gas are constant.
States Of Matter Solid,liquid,gas,plasma,Boce-Einstein Condensate.
Condensation The phase change in which a substance changes from a gas or vapor to a liquid.
Melting The phase change in which a substance changes from a solid to a liquid.
Vaporization The phase change in which a substance changes from a liquid to a gas.
Deposition The phase change in which a substance changes from a gas or vapor to a solid without first changing to a liquid.
Sublimation The phase change in which a substance changes from a solid to a gas or vapor without first changing into a liquid.
Momentum The product of an object's mass and velocity.
Inertia The tendency of an object to resist a change in its motion.
Equilibrium A state in which the forward and reverse paths of a physical or chemical change take place at the same rate.
Newton's Laws 1. An object will stay in motion or at rest unless it is acted upon by an unbalanced force.2. Force equals mass times acceleration.
Ionization The process by which neutral molecules gain or lose electrons.
Flagella A long, lashlike appendage serving as an organ of locomotion in protozoa, sperm cells, etc.
Antibiotic Resistance The ability of a microorganism to produce a protein that disables or prevents transport of the antibiotic into the cell.
Created by: JBoundy