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60 terms

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adaption
a trait that helps an organism survive and reproduce
antibody
a substance produced by the body that destroys or inactivates an antigen that has entered the body
cilia
short structures projecting from a cell and containing bundles of microtubules that move a cell through its surroundings or move fluid over the cell's surface
eyespot
an eyelike marking (as on the wings of some butterflies)
gamete
a mature sexual reproductive cell having a single set of unpaired chromosomes
unicellular
having or consisting of a single cell
hydra
small tubular solitary freshwater hydrozoan polyp
meiosis
(genetics) cell division that produces reproductive cells in sexually reproducing organisms
planarian
A free-living flatworm found in unpolluted ponds and streams.
mammal
vertebrate animal whose female suckles its young
exoskeleton
hard protective structure developed outside the body, as the shell of a lobster
protein
any of a large group of nitrogenous organic compounds that are essential constituents of living cells
ribosome
...
segmentation
Division of an animal body along its length into a series of repeated parts called segments
MOTILE
one whose prevailing mental imagery takes the form of inner feelings of action
transgenic
genetically modified organism whose source of new genetic material is a different species
vector
a variable quantity that can be resolved into components
gamete
a mature sexual reproductive cell having a single set of unpaired chromosomes
dominant
(music) the fifth note of the diatonic scale, trait that will show up in an organism's phenotype if gene is present
heterozygous
having two different alleles for a trait
amino acid
basic building blocks of protein molecules
bacteria
single-celled organisms that lack a nucleus; prokaryotes
cell wall
strong layer around the cell membrane in plants, algae, and some bacteria
DNA
Deoxyribonucleic acid
fission
a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
genus
a classification grouping that contains similar, closely related organisms
host
an animal or plant that nourishes and supports a parasite
mitosis
part of eukaryotic cell division during which the cell nucleus divides
nucleotide
a phosphoric ester of a nucleoside
invertebre
animal without a spine
appendage
a part that is joined to something larger
dna fingerprint
an individual's unique banding pattern on an electrophoresis gel, determined by restriction fragments of the person's DNA
protist
free-living or colonial organisms with diverse nutritional and reproductive modes
rna
ribonucleic acid
species
(biology) taxonomic group whose members can interbreed
taxonomy
a classification of organisms into groups based on similarities of structure or origin etc
translation
rewording something in less technical terminology
virus
a harmful or corrupting agency
homozygous
having two identical alleles for a trait
recessive
The inherited characteristic often masked by the dominant characteristic and not seen in an organism.
autotroph
an organism that makes its own food
binary fission
the division of a prokaryotic cell into two offspring cells
chromosome
a threadlike body in the cell nucleus that carries the genes in a linear order
eukaryote
organism whose cells contain nuclei
flagella
long, thin, whip-like structures, with a core of microtubules, that enable some cells to move
multicellular
made of many cells
heterotroph
an organism that cannot make its own food
sponge
primitive multicellular marine animal whose porous body is supported by a fibrous skeletal framework
mutation
(genetics) any event that changes genetic structure
parasite
an animal or plant that lives in or on a host (another animal or plant)
vertebre
a backbone
double helix
two strands of nucleotides wound about each other; structure of DNA
prokaryote
unicellular organism lacking a nucleus
replication
the act of making copies
scientific name
genus and species
sessile
attached directly by the base
transcription
the act of making a record (especially an audio record)
vaccine
a preparation of weakened or killed pathogens
heredity
the biological process whereby genetic factors are transmitted from one generation to the next
genetics
the branch of biology that studies heredity and variation in organisms