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S1 Biology Final Voc
Semester 1 Biology Final Review Vocabulary
| Term | Definition |
|---|---|
| population | group of individuals of the same species living in a particular area at the same time |
| ecosystem | community of living things plus the nonliving features of the environment that support them |
| community | all the organisms living in an area |
| biosphere | all the parts of the planet that are inherited by living things; sum of all Earth's ecosystems |
| environment | surroundings of an organisms |
| organism | living thing |
| competition | conflict between individual organisms for survival |
| symbiosis | interaction between species |
| mutualism | type of symbiotic relationship in which both organisms involved benefit |
| predation | interaction in which one organism consumes another |
| carbohydrates | organic compounds made of sugar molecules |
| lipids | one of a class of water-avoiding compounds |
| proteins | polymer constructed from a set of 20 amino acid monomers |
| nucleic acids | ex. DNA |
| Golgi apparatus | cellular organelle that modifies, stores, and routes cell products |
| Rough ER | 1. contains ribosomes 2. packages and distributes proteins |
| Smooth ER | makes lipid molecules |
| Chloroplast | organelle found in some plant cells and certain unicellular organisms where photosynthesis takes place |
| lysosome | membrane-bound sac containing digestive enzymes that can break down proteins, nucleic acids, and polysaccharides |
| Mitochondria | cellular organelles where cellular respiration occurs |
| ribosomes | cluster of proteins and nucleic acids that constructs proteins in a cell |
| nucleolus | ball-like mass of fibers and granules in a cell nucleus |
| microfilaments | solid rod of protein, thinner than a microtubule, that enables a cell to move or change shape |
| cell wall | strong wall outside a plant cell's plasm membrane that protects the cell and maintains its shape |
| microclimate | climate in a specific area that varies from the surrounding climate region |
| population density | number of individuals of particular species per unit area or volume |
| exponential growth | growth of a population that multiples by a constant factor at constant time intervals |
| niche | unique living arrangement of an organism defined by its habitat, food sources, time of day it is most active, and other factors |
| Homeostasis | internal stability or "ready state" maintained by the body |
| sustainable development | use of natural resources in a way that allows them to renew themselves and be available for the future |
| theory | 1. well-tested explanation that makes sense of a great variety of scientific observations |
| compound | substance containing two or more elements chemically combined in a fixed ratio |
| enzymes | specialized protein that catalyzes the chemical reactions of the cell |
| hypotonic | having a lower concentration of solute than another solution |
| hypertonic | having a higher concentration of solute than another solution |
| diffusion | net movement of the particles of a substance from where they are more concentrated to where they are less concentrated |
| osmosis | passive transport of water across a selectively permeable membrane |
Created by:
pelk
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