A .Fill in the blanks:
(i)____________ promotes the formation of curd.
(ii) Medicines which kills or stops the growth of the disease-causing microorganisms are called _____________.
(iii) Tuberculosis is caused by ————————–.
(iv) Chicken pox is caused by _______________.
(v) Alcohol is produced with the help of ____________.
Tick the correct answer:
(a)The process of conversion of sugar into alcohol is known as
(i) fermentation (ii) moulding (ii) pasteurisation (iv) Nitrogen –fixation
(b) The bread dough rises because of
(i) heat (ii) kneading (iii) flour (v) growth of yeast cells
© Malaria is caused by
(i)Virus (ii) Bacteria (iii) Protozoa (iv) Algae
d.Typhoid is caused by
(i) Bacteria (ii) Virus (iii) protozoa (iv) Algae
e.The most common carrier of communicable diseases is
(i) Mosquito (ii) cockroaches (iv) butterfly (v) housefly
D(I) What are the major group of microorganisms?
(ii)Why virus are different from other microorganisms?
(iii)Name some friendly microorganisms?
(iv)How microorganism increase the fertility of the soil.
(v)Describe Nitrogen cycle?
please give the answer fast
Answers
Explanation:
A.
- lactobacillus bacteria
- antibiotics
- mycobacterium tuberculosis
- varicella zoster
- yeast
- fermentation
- growth of yeast cells.
- virus
- virus
- mosquitoes
- the major groups of microorganisms are bacteria, virus, fungi, protozoa, algae.
- lactobacillus, rhibozomes.
Answer:
A. Fill in the blanks:
1.Lactobacillus
2.Antibiotics
3.Bacteria
4.Virus
5.Yeast
B. Tick the correct answers:
1.Fermentation
2.Growth of yeast cells
3.Protozoa
4.Bacteria
5.Mosquito
C.Q and A
1.Bacteria, Fungi, Algae and Virus.
2.Because, They show characteristics of both living and non - living. They are so tiny, they
can be seen only through electron microscope.
Some viruses can even affect bacteria. Their parasitic nature make most viruses harmful.
3.Lactobacillus, Yeast and Agaricus
4.Certain bacterias such as Nitrobacter convert the nitrogen that is present in atmosphere into Nitrites and Nitrates. This helps in increasing the fertility of soil.
5.Certain microbes present on Earth help convert the nitrogen present in the atmosphere to usable form , which is then used by living organisms in different ways and later returned to the atmosphere. This is known as Nitrogen cycle.