BT102 FINAL TERM SOLVED PAPERS GET PDF PAPERS FILES FROM THE BELOW LINK:
Physically attach the sample to the slide . Maintain internal and external structures in place . Physical method: Heat Chemical methods: Ethanol or formaldehyde Smudge staining . The stain is applied and then washed off with water. The slide is air-dried or blotted.
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Which contain an additional asymmetric carbon atom and can therefore exist in pairs of stereoisomeric forms
What is a stain? • Stains are salts composed of a negative and a positive ion. • Chromophore: Colored ion.
• Basic dye: The color is in the positive ion. Acid dye: The color is in the negative ion. • Bacteria are negatively charged at pH 7. • Basic dyes are most often used for bacteria.
BT102 FINAL TERM PAST PAPERS BY MOAAZ:
The α and β forms are NOT mirrored images and are referred to as diastereomers. Enzymes are able to distinguish between the two structures and use one or the other preferably. For example, glycogen is synthesized from α-D-glucopyranose, while cellulose is synthesized from β-D-glucopyranose.
BT102 FINAL TERM SOLVED PAPERS:
Overall differences in the cell structures of prokaryotes and eukaryotes Prokaryotes and eukaryotes Prokaryotes and eukaryotes are chemically similar. – Everything consists of nucleic acids, proteins, lipids and carbohydrates.