ap biology laboratory 1

1) Clinical symptoms provide the initial indication of the kind of STD. 2) Laboratory investigations including culture microscopic observation gives some confirmation. 3) Detection of specific antigens / antibodies by ELISA or other tests. 4) In culture the organism can be isola..

Introduction - The term growth is applied to several things and situations. It is quite common to hear people referring to growth of cities, the weeds, of tradition or even of indiscipline. You would have observed the growth of crystals or salt in the laboratory, but it is of non-living t..

The technique of finger printing was perfected by British genetist Dr. Alec Jeffreys in 1984. fig. 25.9 Identical Twins No two people (other than identical twins) have exactly the same sequence of bases in their DNA. By detecting these, the differences in DNA sequences, it is possible to distinguis..

>This experiment clearly supported the hypothesis that in the ancient earth primitive gases could have reacted with one another to form simple organic molecules, in the presence of high-energy sources. Similar experiments conducted with more refined techniques by other scientists like Syd..

STD Causal Agent Detection techniques Chlamydia Chlamydia trachomatis Clinical, Gram-staining of discharge, antigen detection, nucleic acid hybrid isation Gonorrhoea Nisseria gonorrhoeae Gram-staining of discharge, culture Trichomoniasis Trichomonas vaginalis Mic..

Herbaria - A herbarium represents a collection of plant material from a given locality. The specimen is dried, and pressed between paper and cardboard sheets. The herbaria are then arranged in accordance with any accepted system of classification, for further reference and research. fig. 11.1h..

>The largest herbarium in our country is the central National Herbarium at Calcutta. It has about 1,000,000 plant specimens. A botanical garden is mainly a place for growing plants, which produce, colorful varieties of flowers. A botanical garden has a collection of ornamental, medicinal ..

It involves the removal of cancerous parts by operative methods. Tumours are excised by surgical methods. But it does not make sure that all the cancer cells have been removed. All tumours are not accessible for surgery also. In breast tumour or uterine tumour, it is most effective but other treat..

It is the most fundamental and universally seen interaction in sexually dimorphic organisms. Mating is the precopulatory sexual behaviour of two sexes of same species towards each other, which includes courtship, during copulation. Courtship includes mating calls, nest building, dancing and singin..