Download App

Microbes in Human Welfare — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYMicrobes in Human Welfare3 Marks
Question
Microbes are used for industrial production on a large scale. Explain with examples.
✓

Answer

→ Many products which are useful for mankind are produced by microbes on industrial level. For example: beverages, antibiotics, chemicals, enzymes and other biochemical molecules.
→ Saccharomyses cerevisiae Yeast is used to prepare wine, beer, whiskey, brandy or rum like beverages and also used for bread making. Saccharomyses cerevisiae (brewer's) yeast is used to produce ethanol from cereals and fruit juices.
→ Antibiotics are chemical substances which are produced by microbes. They kill pathogenic microbes or slow down their growth. For
example: penicillin
→ We cannot imagine a world without antibiotics. Microbes are also used for commercial and industrial production of certain chemicals like organic acids, alcohols and enzymes.
Examples:
Aspergillus niger- citric acid
Acetobacter aceti acetic acid
Clostridium butyricum- butyric acid

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "3 Marks Question" from Microbes in Human Welfare→Microbes in Human Welfare — all question types→BIOLOGY STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

  1. Organic farmers prefer biological control of diseases and pests to the use of chemicals for the same purpose. Justify.
  2. Give an example of a bacterium, a fungus and an insect that are used as biocontrol agents.
→
Describe the inter-relationship between productivity, gross primary productivity and net productivity.
→
Correct the following statements:
  1. Surgical methods of contraception prevent gamete formation.
  2. All sexually transmitted diseases are completely curable.
  3. Oral pills are very popular contraceptives among the rural women.
  4. In E. T. techniques, embryos are always transferred into the uterus.
→
A population of Paramoecium caudatum was grown in a culture medium. After 5 days the culture medium became overcrowed with Paramoeium and had depleted nutrients. What will happen to the population and what type of growth curve will the population attain? Draw the growth curve.
→
Reproductive and Child Healthcare (RCH) programmes are currently in operation. One of the major tasks of these programmes is to create awareness amongst people about the wide range of reproduction related aspects. As this is important and essential for building a reproductively healthy society.
  1. “Providing sex education in schools is one of the ways to meet this goal.” Give four points in support of your opinion regarding this statement.
  2. List any two ‘indicators’ that indicate a reproductively healthy society.
→
What are the various routes by which transmission of human immunodeficiency virus takes place?
→
F1 progeny of pea plant bearing violet flowers and snapdragon plan bearing red flowers were selfed to produce their respective F2 progeny. Compare the phenotypes, the genotypes and the pattern of inheritance of their respective F2 progeny.
→
How do homologous organs represent divergent evolution? Explain with the help of a suitable example.
→
What is mutation? Explain with the help of an example how does a point mutation affect the genetic code. Name another type of mutation.
→
Explain the origin of simple organic compounds on the primitive earth.
→