Parts of a Cell
The region of a eukaryotic cell that contains the cell's main DNA
What is the nucleus?
A close relationship between two or more species where at least one benefits
What is symbiosis?
Hairlike projections that extend from the plasma membrane and are used for locomotion
What are cilia?
A temporary, foot-like extension of a cell, used for locomotion or engulfing food
What is a psuedopod?
The body of a plant-like organism that is not divided into leaves, roots, or stems
What is the thallus?
The dense cytoplasm found in the interior of many cells
A reproductive cell with a hard, protective coating
What is a spore?
A light-sensitive region in certain protozoa
What is the eyespot?
A relationship between two organisms of different species where one benefits and the other is harmed
What is parasitism?
Tiny floating organisms that are either small animals or protozoa
What are zooplankton?
A membrane-bounded "sac" within a cell
What is a vacuole?
A relationship between two or more organisms of different species where all benefit from the association
What is mutualism?
A protozoan that propels itself with a flagellum
What is a flagellate?
Tiny organisms that float in the water
A substance (made of sugars) that is common in the cell walls of many organisms
What is cellulose?
The thin, watery cytoplasm near the plasma membrane of some cells
What is ectoplasm?
A colony that uses holdfasts to anchor itself to an object
What is a sessile colony?
A pigment necessary for photosynthesis
What is chlorophyll?
generally, heterotrophic protists that are individual single-celled creatures and are usually capable of locomotion
What are protozoa?
A special structure used by an organism to anchor itself
An organelle containing chlorophyll for photosynthesis
What is chloroplast?
A relationship between two organisms of different species where one benefits and the other is neither harmed nor benefited
What is commensialism?
Tiny floating photosynthetic organisms, primarily algae
What are phytoplankton?
A firm, flexible coating outside the plasma membrane
What is the pellicle?
Generally, autotrophic photosynthetic protists that usually form colonies and are not mobile
What are algae?