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LS Investigation 3

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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