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level: Module 3

Questions and Answers List

level questions: Module 3

QuestionAnswer
PseudopodA temporary, foot-like extension of a cell, used for locomotion or engulfing food.
NucleusThe region of a eukaryotic cell that contains the cell's main DNA.
VacuoleA membrane-bounded "sac" within a cell.
EctoplasmThe thin, watery cytoplasm found in the interior of many cells.
EndoplasmThe dense cytoplasm found in the interior of many cells.
FlagellateA protozoan that propels itself with a flagellum.
PellicleA firm, flexible coating outside the plasma membrane.
ChloroplastAn organelle containing chlorophyll for photosynthesis.
ChlorophyllA pigment necessary for photosynthesis.
EyespotA light-sensitive region in certain protozoa.
SymbiosisA close relationship between two or more species where at least one benefits.
MutualismA relationship between two or more organisms of different species where all benefit from the association.
CommensalismA relationship between two organisms of different species where one benefits and the other neither harmed or benefited.
ParasitismA relationship between two organisms of different species where one benefits and the other is harmed.
CiliaHairlike projections that extend from the plasma membrane and are used for locomotion.
SporeA reproductive cell with a hard, protective coating.
PlanktonTiny organisms that float in the water.
ZooplanktonTiny floating organisms that are with small animals or protozoa.
PhytoplanktonTiny floating photosynthetic organisms, primarily algae.
ThallusThe body of a plant-like organism that is not divided into leaves, roots, or stems.
CelluloseA substance (made of sugars) that is common in the cell walls of many organisms.
HoldfastA special structure used by an organism to anchor itself.
Sessile ColonyA colony that uses holdfasts to anchor itself to an object.