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One of man's oldest methods of preserving foods is drying or desiccation. The preservation of foods by drying is a direct result of removal of moisture. Microorganisms need water for growth. The exact amount of water needed for growth of microorganisms varies. This water requirement of microorganisms is best expressed in terms of available water or water activity aw, the vapour pressure of the solution (of solutes in water in most foods) divided by the vapour pressure of the solvent (usually water). Thus aw, for pure water would be 1.00. The water activity depends on the number of molecules and ions present in solution, rather than their size. Thus a compound like sodium chloride, which dissociates into two ions in solution, is more effective at reducing the water activity than a compound like sucrose on mole-to-mole basis.
Describe Chronic MR Murmur in MR Murmur ? Characteristic: Pan systolic murmur, often loudest at apex and radiates to axilla, may also be audible in back and over the entire pre
Q. Observation of Hemichordata ? • identify Balanoglossus as a hemicliordate and give its scientific and common name. • classify Balanogiossus LIP to the level of order.
What is the relationship between the following scientific terms: hypothesis, a theory, and a natural law?
CILIA AND FLAGELLA Purkinj e first observed ciliary movement. Hodge studied detail structure of sperm flagellum. Manton studied structure of cilia in plants.
separation of nucleic acid
Q. What do you mean by Primary Metabolites ? As the name indicates, primary metabolites are molecules involved in vital metabolic pathways. They are of universal occurrence and
Gametogenesis - Human Development Gametogenesis as you are responsive is the process of formation and development of specialized reproductive cells, ova in females and sperms
MID BRAIN - Optics lobes 4 in number ( Corpora Quadrizemmini ) in frog corpora bizemmini . Solid, optocoel is absent. 2 superior coculi and 2 inferior coculi are present.
Assume an experimental target that is to make vast amounts of a particular DNA fragment in pure form from a combination of DNA fragments. Whereas the DNA fragments can be introduc
What are some of the things scientists may do to analyze data? They may use statistics to determine relation- ships among variables, compare the data with those obtained in ot
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