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biology terms Q1
Vocabulary
| Question | Answer |
|---|---|
| cell | the smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane. Microscopic organisms typically consist of a single cell, which is either eukaryotic or prokaryotic. |
| prokaryotes | The prokaryotes (or) are a group of organisms that lack a cell nucleus (= karyon), or any other membrane-bound organelles. |
| eukaryotic | A eukaryote (or) is an organism whose cells contain complex structures enclosed within membranes |
| multicellular | (of an organism or part) having or consisting of many cells |
| Eyepiece | An eyepiece, or ocular lens, is a type of lens that is attached to a variety of optical devices such as telescopes and microscopes. |
| stage | The flat platform where you place your slides. Stage clips hold the slides in place. If your microscope has a mechanical stage, you will be able to move the slide around by turning two knobs. One moves it left and right, the other moves it up and down. |
| low power objective | The low power objective lens is usually a 10x lens and it is used to orient the specimen and get it focused before switching to a higher power lens. |
| Scanning power objective | smallest lens, mag 4x |
| High Power objective | largest lens, mag 10x |
| Coarse objective knob | focuses the image on scanning and low. |
| Fine adjustment knob | focuses the image on high power. |
| Diaphragm | adjust the amount of light passing through the stage. |
| Unicellular | A unicellular organism, also known as a single-celled organism, is an organism that consists of only one cell, unlike a multicellular organism that consists of multiple cells. |
| Living cells | The cell is the basic structural, functional and biological unit of all known living organisms. |
| Viruses | A virus is a small infectious agent that replicates only inside the living cells of other organisms. Viruses can infect all types of life forms, from animals and plants to bacteria and archaea. |
| Atoms | The atom is a basic unit of matter that consists of a dense central nucleus surrounded by a cloud of negatively charged electrons. |
| Molecules | A molecule is an electrically neutral group of two or more atoms held together by chemical bonds. |
| Tissue | In Biology, tissue is a cellular organizational level intermediate between cells and a complete organism. |
| Organ | In biology, an organ is a collection of tissues joined in a structural unit to serve a common function. |
| Organ system | In biology, a biological system (or organ system or body system) is a group of organs that work together to perform a certain task. |
| Organism | In biology, an organism is any contiguous living system (such as animal, fungus, micro-organism, or plant). |
| Population | A population is a summation of all the organisms of the same group or species, who live in the same geographical area, and have the capability of interbreeding. |
| Community | locality inhabited by a group of any size whose members use a common language, manners, law, culture and tradition. |
| Ecosystem | An ecosystem is a community of living organisms (plants, animals and microbes) in conjunction with the nonliving components of their environment (things like air, water and mineral soil), interacting as a system. |
| Biosphere | the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms. Origin |
| Reproduce | Biology To generate (offspring) by sexual or asexual means. |
| Heredity | s the passing of traits to offspring from its parents or ancestor. This is the process by which an offspring cell or organism acquires or becomes predisposed to the characteristics of its parent cell or organism. |
| Francesco Redi | e was the first scientist to challenge the theory of spontaneous generation by demonstrating that maggots come from eggs of flies. |
| Lazzaro Spallanzi | who made important contributions to the experimental study of bodily functions, animal reproduction, and essentially animal echolocation. His research of biogenesis paved the way for the downfall of preformationism theory ( |
| Louis Pasteur | e showed that beef broth could be sterilized by boiling it in a “swan-neck” flask, which has a long bending neck that traps dust particles and other contaminants before they reach the body of the flask. |
| Autotroph | an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide. |
| Heterotroph | an organism deriving its nutritional requirements from complex organic substances. |
| Adaptation | the action or process of adapting or being adapted. |
| Independent Variable | a variable (often denoted by x ) whose variation does not depend on that of another. |
| Dependent Variable | a variable (often denoted by y ) whose value depends on that of another. |
| Spontaneous Generation | supposed production of living organisms from nonliving matter, as inferred from the apparent appearance of life in some infusions. |
Created by:
FaithWHS
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