Ocb 1000 quiz 4 - Quiz PDF

Preview

Summary

Quiz...

Description

Active transport the transfer of substances across membranes by a cell against a concentration gradient .

Archaea prokaryotic unicellular microorganism in the domain archea

Asexual reproduction the type of reproduction that takes place without formation of gametes

Benthos organisms that live on the bottom

Chloroplast the organelle where photosynthesis takes placce

Chromosome the cell structure where dna is located

Cilia short hair like flagellum that is found in large number and used in movement , for pushing food particles and in other functions

Community the population that live and interact in an area

Diffusion the movement of molecules from and area of high concentration to an area of low concentration

Diploid a cell , such as a body cell that contains that contains two similar set of chromosones

Ectotherm an organism that loses metabolic heat to the environment without affecting its own body temperature

Endotherm an organism that retains some metabolic heat which raises its body temperature

Habitat the natural environment where an organism lives

Haploid a cell such as a gem mete that contains half the number of chromosomes found in diploids or body cells

Heredity the transmission of genetic characteristics from one generation to the other

Homeotherm

and organism that is able to keep its body temperature more or less constant regardless the temperature of the environment

Mitochondrion the organelle in which respiration takes place in eukaryotes

Natural selection a mechanism of evolutionary change that result in which organism are best adapted to receiving more challenges from the environment

Nekton organisms that swim strongly enough to move against the current

Osmoconformer an organism that allows its internal salt to change with the salinity of the surrounding water

Osmoregulator an organism that controls it internal salt concentration

Osmosis the movement of water across a select able permeable membrane such as the cell membrane which allows certain molecules to pass through

Phylogeny the evolutionary history of a species or other taxon

Plankton organisms that drift in water

Poikilotherm and organism whose body temperature varies with that of it's sorroundings

Population a group of organisms belonging to the same species and living in the same place

Sexual reproduction reproduction that requires the union of gametes

Species individuals of the same kind that cannot breed with those belonging to other kinds

Symbiosis a close relationship between two species...