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Life Science Final
Final
| Term | Definition |
|---|---|
| Scientific Method | To solve a problem, scientists follow these series of steps. |
| Organ System | A group of organs working together to perform a certain function. |
| Nucleus | Usually, the largest organelle in a cell. |
| Carbon | Organic compounds always contain this... |
| Osmosis | The passive transport of water through a membrane. |
| Interphase | Most of the life of any cell is spent in this period of growth... |
| DNA | The chromosomes in the nucleus of a cell contain this code... |
| Diploid | A cell that has two of every kind of chromosome. |
| Sex cells | Haploid numbers of chromosomes are usually found in this part of an organism.... |
| Niche | The role a species plays within a community. |
| Population density | The number of individuals in a given area. |
| Limiting factor | Anything that restricts the number of individuals living in a population. |
| Respiration | Which process uses oxygen in plants, algae, and animals? |
| worms | a biotic factor |
| Fungi | Not a nonliving feature of the environment. |
| carnivore | eats consumers |
| food web | a model that shows the complex feeding relationships among organisms in a community. |
| organism | any living thing |
| cell | smallest unit of an organism that can carry on life functions |
| habitat | place where an organism lives and that provides food, shelter, moisture and temperature needed for survival. |
| ecosystem | all the living organisms that live in an area and the nonliving features of their environment. |
| hypothesis | prediction that can be tested |
| homeostasis | regulation of an organisms internal life maintaining conditions. |
| biotic | features of the environment that are alive or were once alive. |
| scientific method | procedures used to solve problems and answer questions. |
| carbon cycle | model describing how carbon molecules move between the living and nonliving world. |
| water cycle | model describing how water moves from earths surface to the atmosphere and back to the surface again. |
| organelles | structure in the cytoplasm of a eukaryotic cell can act as a storage site, process energy, move materials, or manufacture substances. |
| climate | average weather conditions of an area over time. |
| abiotic | nonliving, physical features of the environment |
| cell membrane | protective outer covering of all cells that regulates the interactions between the cell and the environment. |
| cytoplasm | constantly moving gel like mixture inside the cell membrane |
| mitochondria | cell organelle that breaks down food and releases energy |
| chloroplast | green, chlorophyll containing, plant cell organelle that uses light energy to produce sugar from carbon dioxide. |
| diffusion | a type of passive transport in cells in which molecules move from areas where there are more of them to areas to where there are fewer of them. |
| osmosis | a type of passive transport that occurs when water diffuses through a membrane |
| cell theory | states that all organisms are made up of one or more cells, the cell is the basic unit of life, and all cells come from other cells. |
| organic compound | compounds that always contain hydrogen and carbon; carbohydrates, lipids, proteins, and nucleic acids are organic compounds found in living things. |
| nucleus | organelle that controls all the activities of a cell and contains heredity material made of proteins and DNA |
| equilibrium | occurs when molecules of one substance are spread evenly throughout another substance |
| zygote | new diploid cell formed when a sperm fertilizes an egg; will divide by mitosis and develop into a new organism. |
| photosynthesis | process by which plants use light energy to produce a simple sugar from carbon dioxide and water and give off oxygen. |
| mitosis | cell process in which the nucleus divides to form two nuclei identical to each other, and identical to the original nucleus, in a series of 4 steps. |
| haploid | cell that has half the numbers of chromosomes as body cells, |
| chromosome | structure in a cells nucleus that contains hereditary material |
| cellular respiration | process by which producers and consumers release stored energy from food molecules; series of chemical reactions used to release energy stored in food molecules. |
| diploid | cell whose similar chromosomes occur in pairs |
| meiosis | reproductive process that produces 4 haploid sex cells from one diploid cell and ensures offspring will have the same nnumber of chromosomes as the parent. |
Created by:
Iglehart
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