Assertion : Yeasts such as Saccharomyces cerevisiae are used in baking industry.
Reason : Carbon dioxide produced during fermentation causes bread dough to rise by thermal expansion.
If both Assertion and Reason are true and the reason is the correct explanation of the assertion
If both Assertion and Reason are true but the reason is not the correct explanation of the assertion
If Assertion is true statement but Reason is false
If both Assertion and Reason are false statements
C.
If Assertion is true statement but Reason is false
Yeast such as Saccharomyces cerevisiae is used in baking industry. The yeast ferments glucose to yield ethyl alcohol and carbon dioxide. This carbon dioxide is used in baking industry for raising dough. Kneading, stretching and folding of the dough develops the protein structure to improve its elastic properties and its ability to hold gas. This improved gluten properties enable better retention of the gases within the dough as the structure expands and the cell walls become thinner.
Biological Oxygen Demand (BOD) is a measure of
Industrial wastes poured into water bodies
The extent to which water is polluted with an organic compound
Amount of carbon monoxide inseparably combined with haemoglobin
Amount of oxygen needed by green plants during the night
Assertion : Curdling is required in the manufacture of cheese.
Reason : Lactic acid bacteria are used for the purpose.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false
If both assertion and reason are false
Assertion: While working on Staphylococci, Alexander Fleming observed that Penicillin nolatum inhibits the growth of the bacteria.
Reason : This inhibiting chemical was commercially extracted and its full potential was established by Alexander Fleming.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are hue but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
One of the major difficulties in the biological control of insect pests is the :
practical difficulty of introducing the predator to specific areas
method is less effective as compared with the use of insecticides
predator does not always survive when transferred to a new environment
predator develops a preference to other diets and may itself become a pest
The growth curve of bacterial population in lab is plotted against time. What will be the shape of graph
Sigmoid
Hyperbolic
Ascending straight line
Descending straight line
Continued consumption of a diet rich in butter, red meat and eggs for a long period may lead to:
vitamin toxicity
kidney stones
hypercholesterolemia
urine laden with ketone bodies
Pollution from animal excreta and organic waste from kitchen can be most profitably minimized by
storing them in underground storage tanks
using them for producing biogas
vermiculture
using them directly as biofertilizers
Select the correct pair of microorganism and the product obtained from it.
Monascus purpureus- produces large holes in Swiss cheese.
Saccharomyces cerevisiae - used for making wine and beer after distillation
Streptococcus - produces streptokinase which is used to remove clots.
Aspergillus niger - produces citric acid and butyric acid.
Latest trend in plant disease control is
chemical control
biological control
good manure and fertilizer
breeding for disease resistance
