only of India but of the entire world. He moved to Allahabad for higher education where he obtained his D.Sc. During his college days‚ he was inspired by Dr W. Dudgeon‚ an American missionary teacher‚ to develop interest in Botany and especially morphology. His teacher once expressed that if his student progresses ahead of him‚ it will give him a great satisfaction. These words encouraged Panchanan to enquire what he could do for his teacher in return. He worked on embryological aspects and popularised
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complex with a large variety of proteins‚ to form chromosomes.). Typically a few micrometres in length‚ bacteria have a wide range of shapes‚ ranging from spheres to rods and spirals. Bacteria display a wide diversity of shapes and sizes‚ called morphologies. Bacterial cells are about one tenth the size of eukaryotic cells and are typically 0.5–5.0 micrometres in length. Intracellular structures: The bacterial cell is surrounded by a lipid membrane‚ or cell membrane‚ which encloses the
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study of viruses. - Mycology – the study of fungi. - Entomology – the study of insects. - Ichthyology – the study of fishes. - Herpetology – the study of lizards‚ snakes etc. - Ornithology – the study of birds. C. Principal sub-division of Biology in terms of approach on studying it. - Anatomy – the study of gross structure of an organism as seen in dissection. - Morphology – the study of form and structure of plants and animals
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setting up experiments‚ hands on operation of the microscope and its various lenses‚ manipulating specimens on and off the microscope and following and carrying out viewing instructions for slide‚ regular and oil immersion and various staining and wet mount techniques. Observations/Results : Sample Observations Part 1 Part 2 150x 600x 1500x (Oil Immersion) Amoeba proteus Appears to be oval with a tail-like end and solid as well as membrane layered cells. The cells appear to be
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dams are not always perceivable to the untrained observer‚ nor can they be observed on a temporal basis since changes to stream morphology may occur over a span of a few years‚ to hundreds and even thousands of years. When examining dam construction on healthy and functioning rivers and their ecosystems‚ what becomes evident is the decline of fisheries and water quality (Mount 236). The damming of natural stream flows degrades fish habitats by increasing
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The studies of size‚ morphology and composition of the nanoparticles were performed by means of transmission electron microscopy (SEM) and Fourier transform infrared (FTIR) spectral measurements were carried out to identify the potential biomolecules in Saroca asoca leaf extract
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Evolution as a theory * Theory- in science‚ a well substantiated explanation of some aspect of the natural world Evolution- the accumulation of inherited genetic changes within populations over generations * Does not refer to changes that occur in an individual within its lifetime * Not limited to speciation that may only occur over long periods of time * Can occur over a few generations‚ and is most commonly expressed as an adaptation to a changing environment or the change in allele
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BSC2011C Final Review Unit 1 Review Ch. 25‚ 22‚ 23‚ 24‚ 26‚ 19‚ 27 Ch. 25 1. Life is metabolism and heredity. Metabolism is the mechanism that creates order and complexity from chaos‚ by acquiring and expending energy. Heredity is the ability of an organism to copy itself and it is broken down into: i. Multiplication‚ ii. Inheritance‚ iii. Variation. 2. DNA codes via RNA for 20 of naturally occurring amino acids. Amino Acids are the building blocks of proteins and bodies. DNA stores and transmits
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2. Make a wet mount of your cheek cells (see p. 4-6 for instructions). Examine your slide under the compound microscope and draw a few cheek cells at 400X in the space provided. Be prepared to discuss and present your drawings Make an Elodea leaf wet mount: obtain an Elodea leaf and make a wet mount — do not use methylene blue or other dye in this case. Examine the wet mount with your compound microscope at 400X. Focus on the fleshy layer inside
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chemical and physical methods is that the synthesis is expensive and can also have toxic substances absorbed onto them. To overcome this‚ the biological method provides a feasible alternative. The major biological systems involved in this are bacteria‚ fungi‚ and plant extracts. The major applications of silver nanoparticles in the medical field include diagnostic applications and therapeutic applications. In most of the therapeutic
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