Plz ans if you know two or three then also plz ans if you know all ans plz ans me •Why nitrogen cycle is important? •Why virus is not included in living category? •Write the name of two fungal disease in animal and two viral disease in plant. •What are the common chemical preservatives used other than sodium compounds? •How lightening help in fixing nitrogen? •Differentiate between fermentation and pasturisation •How small pox is irradicaded? • Mention the name of some antibiotics.?

Question

Answer

1. IT HELPS IN THE CIRCULATION OF NITROGEN IN THE NATURE.4. COMMON PRESERVATIVES ARE AS FOLLOWS.-CHEMICAL PRESERVATIVES.-COMMON SALT AND ORGANIC SALT.-SALT AND SUGAR.-OILS AND VINEGARS.-HEAT AND COLD TREATMENT.-STORAGE.5. - FERMENTATION - THE PROCESS OF CONVERSION OF CARBON DIOXIDE AND SUGAR TO FORM ALCOHOL.- PASTURISATION - THE PROCESS OF HEATING THE MILK AT 100 DEGREE CELCIUS FROM 15 TO 30 SECONDS AND CERTAINLY CHILLED AND STORED.6. STREPTOMYCIN.

Answer

1))Due to the nitrogen cycle, nitrates and nitrites are released into the soil which helps in enriching the soil with nutrients needed for cultivation. As plants use nitrogen for their biochemical processes, animals obtain the nitrogen and nitrogen compounds from plants.

2)) Viruses are not included in the category of microorganisms because they do not have their own entity. They behave as living organisms only in the body of the host organism.

3))fungal disease -ringworm, atheletes footviral in plants-blight

4))Ascorbic Acid.Ascorbyl palmitate.Benzoic Acid.Butylated hydroxyanisole (BHA)

5)) The enormous energy of lightning breaks nitrogen molecules and enables their atoms to combine with oxygen in the air forming nitrogen oxides. These dissolve in rain, forming nitrates, that are carried to the earth.

6)) Pasteurization is a process of heating a food, and then cooling it immediately. The process slows down the growth of microorganisms. It is done for the food safety reasons in industry.
Fermentation in the food processing typically is the conversion of the sugars to alcohols and carbon dioxide or organic acids using those organisms that are not obligatory anaerobes such as yeasts under anaerobic conditions.

7))Penicillins, Cephalosporins, Macrolides, Quinolones ,Aminoglycosides ,Tetracyclines

Top Courses for Class 8View all

Science Class 8

Mathematics (Maths) Class 8

Social Studies (SST) Class 8

English Class 8

Improve Your Calculations: Vedic Maths (English)

Top Courses for Class 8

Top Courses for Class 8

Suggested Free Tests

Related Content

Class 8 Study Material

Class 8 Subjects

Competitive Examinations for Class 8

NCERT Solutions

Reference Books for Class 8

Other Popular Exams

Company