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Dewey Bio9 Unit 2
Dewey BIO9 Unit 2 Vocab
| Question | Answer |
|---|---|
| active transport | one-way transport of substances across a membrane;requires energy |
| bacteria | a unicellular (one-celled) organism. Often reffered to as prokaryotes |
| biological evolutin | genetic change in species over time |
| cell membrane | also known as the plasma membrane, it is the outer boundry of a cell, it gives shape and protection to the cell, as well as regulating the transport of materials in and out of the cell. |
| cell nucleus | an organelle in eukaryotic cells that is bound by a nuclear membrane, directs cell activities and stores DNA |
| cell organelle | specialized compartments that carry out specific functions in eukaryotic cells |
| cell wall | a thick, rigid coat formed outside the cell membrane of plants, fungi and bacteria, which is mainly composed of cellulose. |
| chloroplast | a carbohydrate-producing organelle found in green plants and protist |
| chromosome | a compact structure of tightly coiled DNA that forms prior to mitosis |
| cytoplasm | the material inside the cell membrane containing the necessary components for cell life. |
| diffusion | also known as a passive tranport, is the movement of molecules from a region of higher concentration to one of lower concentration; does not require energy |
| DNA (deoxyribonucleic acid) | a complex, double-stranded nucleic acid molecle that is found in most living things that acts as the primary genetic material. It contols the structure of proteins and influences chemical reactions within the body |
| eukaryote | organism whose cells contain a membrane-bound nuccleus and membrane-bound organelles. Usually are multicellular organisms. |
| Golgi apparatus | an organelle that delivers substances by the endoplasmic reticulum to specific places in the cell |
| mitochondrion | energy-producing organelles in eukaryotes |
| osmosis | movement of water across a membrane from an area of high concentration to an area of lower concentration |
| photosynthesizing organism | an organism that has the capability to carry out photosynthesis |
| prokaryote | single-celled organism lacking a true nucleus |
| protein | a class of molecules that are made up of polymers of amino acids |
| ribosome | RNA-containing organelle that is the site for protein synthesis |
| vacuole | a space within the cytoplasm of a plant cell, containing cell sap |
| virus | consists of nucleic acid surrounded by potein or protein and lipid coats. Viruses infect the cells of living things, and while they carry out no metabolism themselves, they control the metabolism of the infected cell |