Science Biology
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Classifying
Grouping together items that are alike in some way.
Binomial nomenclature
The scientific system of naming an organism using two terms, the first being the genus and the second the species.
Scientific name ( Do not need to know )
The name of an organism used by scientists, consisting of a genus and species. Example: Canis familiaris is a dog.
Genus
A taxonomic classification that generally consists of a group of species exhibiting similar characteristics.
Species
A group of similar organisms whose members can mate with one another and produce fertile offspring.
Domain ( Do not need to know )
The highest level in systems of classification of life, above kingdom. The three domains are Archaea, Bacteria, and Eukarya.
Kingdom ( Do not need to know )
The second highest level of classification of life. The six kingdoms are Plants, Animals, Fungi, Protists, Archaebacteria, and Eubacteria.
Prokaryote
Organism whose cells lack a nucleus and some other cell structures.
Eukaryote
Organism with cells that contain a nucleus and other cell structures.
Autotroph
An organism that makes its own food.
Heterotroph
An organism that cannot make its own food.
Unicellular
An organism made of a single cell.
Multicellular
An organism made of more than one cell.
Asexual reproduction
when an organism duplicates its DNA and divides to form an offspring which is genetically identical
Sexual reproduction
when 2 organisms share part of their DNA and form an offspring which is genetically similar to the parent but NOT identical
Binary fission
asexual reproduction in bacteria
Conjugation
sexual reproduction in bacteria
Cell
smallest unit of life that can perform all life processes; “basic unit of life”
Cell membrane
layer that surrounds the cell; acts as a barrier; controls what substances go in and out
Cell wall
rigid outer structure that surrounds the cell membrane in a plant cell ONLY; provides protection
Chloroplast
– produces food for the plant cell through the process of photosynthesis
Cilia
numerous hairs that surround a unicellular organism; used for movement and to sweep food into its mouth
Cytoplasm
jelly-like fluid inside the cell that cushions and supports the organelles
DNA
deoxyribonucleic acid; within the nucleus; genetic information that guides/controls the cell’s functions