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69 Cards in this Set

  • Front
  • Back
the seperation of alleles is called
segregation
organism that have identicial alleles for a particular trait are
homozygous
the genetic makeup of an organism is its
genotype
genes that can have more than two alles have
multiple allies
what type of cell had two sets of chromosomes
diploid
shape formed by each strand of DNA
helix
Instructions for assembling amino acids into proteins are carried in
messenger RNA or messenger gene
What is the formation of a new species called?
speciation
What principle states the frequency of an allele in a population will remain constant unless one or more factors cause that frequency to change?
Hardy Weignburg
Which of the following is required to maintain genetic equilibrium?
no mutation
a gene pool typically contains
two or more alliels
what situation occurs when members of two different species cannot interbreed and produce fertile offspring?
reproductive isolation
a species that is easily recognizable, existed for relatively short period of time, and covered a geographic area may as a
index fossil
when a paleontologist measures the amount of an isotope present in a fossil, what dating techniques are being used?
radioactive dating
we are currently living in the cenozoic
era
what is(are) measure in eras and periods
geologic time
huge numbers of species disappear at once during
mass extinction
A corkscrew-shaped bacterium is called a
spirullum
a whiplike structure used for movement is a
fogelum
a _______ can be used to cure bacterial dieseases
antibiotics
techniques of _________ rely on extreme temperatures or chemical action to destroy bacteria
starlization
bacteria may reproduce by _________ fission
bionary
rod shaped bacterium
bacilius
how bacteria exchange genetic material
conjectation
the outer protein coat of a virus
capsid
single-celled microorganism that lacks a nuclues
prokyariot
disease causeing agent
pathogen
What is the name the type of organism that is not a plant, animal, a fungus or prokaryote
protists
extentsions of cytoplasm for movement and feeding are called
pseudopods
what structure in euglenophyes help them to detect light
eye spot
What is the name of the reproductive structure in ascomycetes that contains spores
ascus
in basidiomycetes, what is the reproductive structure that resembles a club called
basidum
what structure forms at the edge of a basidum
basidiospore
what is the name of the symbiotic association between a fungus and a photosynthetic organism
lichen
what is the association of a plant root and a fungus called
mycronniza
what is the seed-bearing structure of a gymnosperm called?
cone
What compounds do many algae have to help them absorb light at different wavelengths
accessorie pigments
what process allows paramecia to exchange genetic matter with other paramecia
conjecation
What is the name of process in which pollen is carried to the female gametophyte
polynation
What surrounds and protects a plant embryo?
seed coat
What is the thick wall of tissue that surrounds a seed called
fruit
What type of plant lives for more than two years
perennial
tissue specialized to conduct water and nutrients
vascular tissue
photosynthetic organ that contains one or bundles of vascular tissue
leaf
tissue that carries water upward from the roots and leaves of a plant
zylum
supporting structure that connects roots and leaves of a plant
stem
tissue that transports solutions of nutrients and carbohydrates in a plant
phloem
vessel elements, sieve tube elements, and companion cells are all parts of _______ tissue
vascular
In a dicot stem, parenchyma cells inside the ring of vascular tissue are known as the
pith
the older xylem near the center of a woody stem us called
heartwood
the older xylem near the center of a woody stem is surronded by a lighter-colored part of the stem called
sapwood
a part of a tree called _____ includes all tissues outside the vascular cambium
bark
an opening on the underside of a lead that allows carbon dioxide and oxygen to diffuse in and out of a leaf is called
stoma
________ controls at the opening and closing of stomata by responding to changes in water pressure
guard cells
the loss of water from a plant through its leaves is called
transpiration
the tendency of water to rise in a thin tube is called
cappilary action
according to the ________ materials move from a source cell, where photosynthesis produces a high concentration of sugars, to a sink cell, where sugars are lower in concentration
flow hypothesis
supporting structure that connects roots and leaves of a plant
stem
tissue that transports solutions of nutrients and carbohydrates in a plant
phloem
vessel elements, sieve tube elements, and companion cells are all parts of _______ tissue
vascular
In a dicot stem, parenchyma cells inside the ring of vascular tissue are known as the
pith
the older xylem near the center of a woody stem us called
heartwood
the older xylem near the center of a woody stem is surronded by a lighter-colored part of the stem called
sapwood
a part of a tree called _____ includes all tissues outside the vascular cambium
bark
an opening on the underside of a lead that allows carbon dioxide and oxygen to diffuse in and out of a leaf is called
stoma
________ controls at the opening and closing of stomata by responding to changes in water pressure
guard cells
the loss of water from a plant through its leaves is called
transpiration
the tendency of water to rise in a thin tube is called
cappilary action
according to the ________ materials move from a source cell, where photosynthesis produces a high concentration of sugars, to a sink cell, where sugars are lower in concentration
flow hypothesis