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agarose gel electrophoresis is the method to analyze the size of the dna or rna fragments in the presence of an electric field bigger fragments of
acrylamide gel is a polymer gel used for electrophoresis of dna or protein to measure their sizes in the daltons for proteins or in base pairs for
ablation experiment is an experiment designed to produce an animal deficient in one or the few cell types in order to study cell lineage or the
ice age is an interval of geologic time between 2 million and 10000 years ago during that period the northern hemisphere experienced several episodes
homologous structures are the body parts in different organisms which have similar bones and similar arrangements of the blood vessels muscles and
ground system plant tissue system composed commonly of parenchyma cells with some collenchyma and sclerenchyma cells that occupies the space
gill slits are the opening or the clefts between the gill arches in the fish water taken in by the mouth passes through the gill slits and bathes the
founder effect the difference in gene pools amongs an original population and a new population founded by one or a few individuals randomly separated
food chain is the simplest representation of energy flow in the community at the base is energy stored in the plants which are eaten by the small
fertilization is the fusion of the two gametes sperm and ovum to produce a zygote which develops into the new individual with a genetic heritage
evolution can be explained as follows 1 the change in the life over time by adaptation over-reproduction variation and differential
eutrophication runaway growth of the aquatic plants which takes place when agricultural fertilizers containing the phosphorus and nitrogen run off
eukaryote is the type of cell found in several organisms including single-celled protists and multicellular fungi plants and animals as well
entropy is the degree of disorder in a system as the energy is transferred from one form to another form some of it is lost as heat as the energy
1 it is the series of coupled oxidationreduction reactions where the electrons are passed like hot potatoes from one membrane-bound proteinenzyme to
chlorophyll is the pigment in the green plants which absorbs solar energy chlorophyll a - it is a green photosynthetic pigment common to all
electron acceptor is a molecule which forms the part of the electron transport system which transfers electrons ejected by chlorophyll during the
double fertilization it carries two sperm cells to the female a characteristic of angiosperms in which the pollen tube gametophyte in the ovule
digestive system is one of eleven major body organ systems in animals it converts food from the external environment into the nutrient molecules
dinoflagellates are single-celled to colonial protistans characterized by the two flagella one girdling cell and the other trailing the cell some of
dictyosomes are produced on the organelles in the plant cells composed of the series of flattened membrane sacs which sort chemically modify and
diabetes mellitus types i and ii is a disorder regarding the defects in insulin action type i diabetes is characterized by an inadequate insulin
devonian is the period of geologic time from 410 - 360 million years before the present life on land diversified with amphibians appearing late in
the cranial nerves are composed of twelve pairs of nerves which emanate from the nervous tissue of brain in order to reach their targets they should
countercurrent flow is the arrangement by which fish get oxygen from the water which flows by the help of their gills the water flows across the