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Biology 10th grade
Semester 1 Final
Term | Definition |
---|---|
Chemical Reaction | Result when two or more elements are chemically mixed. |
Buffer | Mixtures that react with acids or bases to keep pH within a particular range. |
Species | Group of specific organisms. |
Population | Same species living in same place and time. |
Niche | Role or position that an organism has in its environment. |
Invasive Species | Non-native species that are transported to a new habitat. |
Ecology | Study of how organisms interact with one another and their environment. |
Peer Review | Results of the factor being tested. |
pH Scale | Measure of concentration of hydrogen in a solution. |
Catalyst | Substance that lowers the activation energy needed to start a chemical reaction. |
Hypothesis | Information gathered from a logical statement. |
Theory | A Statement that can be proven about an subject. |
Observation | Information collected with the senses. |
Inference | Conclusions based on observations. |
Independent Variable | You can change and control. |
Dependent Variable | Change as result of Independent variable. |
Control Variable | Stays the same through out. |
Acids | Releases hydrogen ions when dissolved in water. |
Bases | Releases hyroxide ions when dissolved in water. |
Reactants | Starting Substance. |
Products | Substances formed by the reactions. |
Solute | Substance that is dissolved in the solvent. |
Solvent | Substance in which another substance is dissolved. |
Autotroph (Producer) | Gets energy by sunlight. -Plants |
Heterotroph (Consumer) | Gets energy by consuming other organisms. -Animals |
Limiting Factor | Restricts numbers, reproduction or distribution of organisms. |
Carrying Capacity | Max number of individuals in a species that environment can support for long term. |
Prokaryote | Unicellular. |
Eukaryote | Multicellular. |
Mutualism | Both organisms benefit. |
Commensalism | One benefits and the other is unaffected. |
Parasitism | One benefits and the other is harmed. |
Nucleus | Contains most of DNA. The center is the nucleolus where ribosomes are formed. |
Endoplasmic Reticulum | System of folded sacs. |
Mitochondria | Converts sugar into energy. |
Golgi Apparatus | Flattened stacks of membranes that package protein into sacs called vesicles. |
Ribosome | Helps make proteins. |
Vacuole | Vesicles used for temporary storage for food, enzymes and water. |
Lysosome | Digests old organelles, food particles, and foreign matter. |
Cytoplasm | Semi-fluid material that fills the cell. |
Chloroplast | Captures light and converts it into energy. |
Centriole | Groups of microtubles used in cell division. |
Cell Wall | Thick, rigid, surround plasma membrane. |