now plz answer this questions
Answers
Answer :
1.
a)Microorganisms cannot be seen with naked eyes. They can be seen with the help of a microscope.
b)Bacteria such as rhizobium and certain blue-green algae present in the soil can fix atmospheric nitrogen and convert into usable nitrogenous compounds, which are used by plants for the synthesis of plant proteins and other compounds.
c) Ethanol is commercially produced using a process called fermentation. Many other alcohols can be made this way, but are more likely to be produced by synthetic routes - from natural gas, oil or coal. Fermentation is the process in which yeast breaks down sugar into alcohol and carbon dioxide
d)A bacterium called Vibrio cholerae causes cholera infection. The deadly effects of the disease are the result of a toxin the bacteria produces in the small intestine. The toxin causes the body to secrete enormous amounts of water, leading to diarrhoea and a rapid loss of fluids and salts (electrolytes).
2.
a)Yeast is used in the production of Alcohol, winemaking and in baking bread. Explanation: The main source of yeast is molasses or lactic acid bacteria.
b)streptomycin ( not sure )
c)Female anopheles mosquito
d)house fly
e) growth of yeast cells
f)Ethanol fermentation, also called alcoholic fermentation, is a biological process which converts sugars such as glucose, fructose, and sucrose into cellular energy, producing ethanol and carbon dioxide as by-products.
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