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A simple osmometer
Remove the bottom from a small glass bottle about 2.5 cm in diameter. Fit a one-hole stopper tightly into the bottom and put a 50 cm length of glass tubing or a length of two soda straws by the hole.
Place a piece of cellophane or parchment paper over the other end of the bottle and fasten it securely by winding with various turns of string or strong thread. Fill the bottle with a very concentrated sugar solution and change the one-hole stopper being sure that no air bubbles remain inside the bottle. Clamp the osmometer in a glass of water and permit to stand a few hours.
What are homologous chromosomes? Which are the human cells that do not have homologous chromosomes? Chromosomes have genes (genetic information in the form of nucleotide sequen
Explain some Do's and Don'ts when working in Laboratory? 1) Always wear a lab coat when working a laboratory. 2) Ensure that no harm is caused to yourself or the people work
Does the environment exert an influence on the phenotype? A phenotype may be changed (compared to the original situation conditioned by its genotype) by nongenetic means. Examp
Endocrine Regulation of the Cycle - Reproduction You have learnt above that the reproductive cycles are governed by the interplay of pituitary and gonadal hormones. According
What are five fin fish found in the North-East United States?
What are Flavonols and Flavones? These are the most widely distributed among the flavonoids. The most commonly occurring are Quercetin, Myricetin and Kaempferol. Quercetin is q
a) Mention the name of the causal organism, symptoms and the mode of transmission of the disease Amoebiasis b) Mention the property that enables the explants to restore into a n
Table provides you the classification of the living primates. The primate fossil history dates back to 60 million years i.e. to Paleocene times, more specifically to the cretaceous
Mutations and genetic recombination (in sexually reproducing organisms) are major sources of variations in natural populations, In this section we will briefly mention the various
give an account of ciliary and flagellar movement in protozoa
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