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LS Investigation 3
| Term | Definition |
|---|---|
| Organisms | Any living things |
| Diaphragm | Controls the amount of light that enters the microscope lenses. |
| Robert Hooke | Used a microscope and was the first person to observe and name the cells. |
| Cells | Basic unit of life. |
| Elodea Leaf | A flowering pond plant with leaves that are 1 to 2 cells thick. |
| Paramecium | a single-celled freshwater animal that has a characteristic slipper-like shape and is covered with cilia. |
| protists | A eukaryotic organism that cannot be classified as an animal, plant, or fungus. |
| cilia | The hairlike projections on the outside of cells that move in a wavelike manner. |
| Antoni van Leeuwenhoek | Was first to observe live microorganisms in 1673 |
| animalicules | Leewenhoek described microorganisms as ______. |
| organelles | Structures specialized to perform distinct processes within a cell. |
| vacuoles | Stores food, water, wastes, and other materials. |
| mitochondria | Called the powerhouse of the cell. Where a cell get's all it's energy from. Cellular Respiration. |
| cili | small hair |
| cell membrane | A thin, flexible barrier around a cell; regulates what enters and leaves the cell. |
| oral groove | Funnel-shaped and allows food to enter the paramecium. |
| digestive enzymes | Proteins that break down food into smaller molecules. |
| contractile vacuoles | Water expelling vesicles. |
| daughter cells | New cells produced by cell division. |
| cell division | Process by which a cell divides into two new daughter cells. |
| heterotroph | An organism that obtains organic food molecules by eating organisms or their by |
| macronucleus | Controls most metabolic functions of the paramecium's cell. |
| micronucleus | Controls most reproductive and hereditary functions. The smaller nucleus. |
| conjugation | Process in which paramecia and some prokaryotes exchange genetic information. |
| unicellular | Made up of a single cell. |
| multicellular | Made up of more than one cell. |
| amoeba | A type of protist characterized by great flexibility and the presence of pseudopodia. |
| pseudopod | false foot which amoebas use to move |
| Protista | A kingdom of unicellular living organisms that are neither animals nor plants; includes some groups of algae, slime molds and protozoa |
| protist | Microscopic unicellular organisms that don't fit into the other kingdoms. |
| protozoans | animal-like protists |
| flagella | long whip-like projection on cells used for locomotion |
| cell membrane | Separates cell from the outside environment. Controls what enters and leaves the cell. |
| cytoplasm | Jelly like fluid inside a cell. |
| cyto- | Prefix meaning cell. |
| endoplasm | Darker cytoplasm towards the center of an amoeba. |
| ectoplasm | Clearer cytoplast towards the cell membrane of the amoeba. |
| phagocytosis | The pseudopodia wrap around a food particle and engulf it in this process. |
| enzymes | Proteins that breakdown molecules. |
| lysosomes | An organelle that contains digestive enzymes. |
| nucleus | Controls all cell activities. |
| binary fission | A method of cell division where the cells splits into two new daughter cells. |
| cyst | A hard walled body that the amoeba forms during unfavorable conditions. |
| Amebic Dysentery | An infection caused by drinking contaminated water. |
| pellicle | A tough covering on the outside of the paramecium. |
| ciliate | Any protozoan that has cilia. |
| gullet | The stomach of the paramecium. |
Created by:
jhshwood
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