Explore topic-wise InterviewSolutions in Current Affairs.

(A) Only one polypeptide

(A) More than one polypeptide

(A) Causes premature release of the polypeptide chain

Correct option (D) eIF-4

(D) Translocation

(A) Inhibiting initiation process

Correct option (C) mRNA

Correct option (A) Zero

(A) EF-II, GTP

(D) All of these

The biotic components of an ecosystem include the living organisms such as plants and animals. Plants play a very important role in controlling floods and soil erosion. The roots of plants hold the soil particles together, thereby preventing the top layer of the soil to get eroded by wind or running water. The roots also make the soil porous, thereby allowing ground water infiltration and preventing floods. Hence, plants are able to prevent soil erosion and natural calamities such as floods and droughts. They also increase the fertility of soil and biodiversity.

 Some possible explanations are that the alien species may be 

i. Vigorously growing and compete with the natural plants for minerals, water etc. The less vigorous local species may be eliminated.

 ii. Natural pests and predators of the alien species may not be present in the introduced area-leading to proliferation in their number.

iii. The introduced species may harm the local species by production of chemicals (Amensalism) 

iv. The alien species by proliferation may make conditions unfavourable for the growth of local native plants. (eg. Eichornia)

Some possible explanations are that the alien species may be

i. Vigorously growing and compete with the natural plants for minerals, water etc. The less vigorous local species may be eliminated.

ii. Natural pests and predators of the alien species may not be present in the introduced area-leading to proliferation in their number.

iii. The introduced species may harm the local species by production of chemicals (Amensalism)

iv. The alien species by proliferation may make conditions unfavourable for the growth of local native plants. (eg. Eichornia).

a. Polygenic resistance

1. (a) organize

2. (a) open

3. (c) amazed

4. (a) acquainted with

5. (c) patterns

One 'σ' and one 'π' bond.

E.coli was first isolated by Escherich.

Mycobacterium tuberculosis was first discovered by Robert Koch.

Condensation of light in light Microscope is by Condensor.

Hanging drop method for motility study was first introduced by Leeuwenhoek.

Modern concepts of chemotherapy was proposed by Paul Ehrlich.

The role of phagocytosis was discovered by Elie Metchikoff.

a. Magnetic coils

Electron microscope gives magnification upto 2,00,000 X.

Antiseptic methods were first introduced by Lord Lister.

The antiseptic method was first demonstrated by Lord Lister.

d. Bradyrhizobium

b. Environmental sanitation

Disease that affects many people at different countries is termed as Pandemic.

c. Alfred D.Hershey & Martha Chase in 1952.

c. Direct contact transmission

The symptome “ general feeling of illness and discomfort “ is called Malaise.

The image obtained in a compound micro scope is Virtual.

The first antibody to contact invading microorganisms was IgM.

b. Yeast artificial chromosomes

Electron Microscope was discovered by Knoll and Ruska.

Cork cambium arises from dedifferentiation of parenchyma or collenchyma cells located at the outermost layer of the cortex, after the secondary xylem and phloem formation is started. Sometimes, the first meristematic cells are differentiated from primary phloem or from the epidermis.

Biotechnology:-

Biotechnology is the integrated use of biochemistry, microbiology and engineering science in order to achieve technological (industrial) application of the capabilities of micro organisms, cultured tissues/cells and part there.

Biotechnology mainly deals with industrial scale production of biopharma ceuticals and biologicals using genetically modified microbes, fungi, plants and animals. The Application of biotechnology include.

(i) Therapeutics 

(ii) diagnotics 

(iii) genetically modified crops for agriculture 

(iv) processed food 

(v) bioremediation 

(vi) waste treatment and 

(vii) energy production

Research Areas of Biotechnology:-

(i) Catalyst, 

(ii) Optimum conditions, 

(iii) Downstream Processing

Biotechnological Application in Agriculture:-

Options to increase the Food production. There are three options to increase the food production.

(i) Agrochemical based Agriculture:- 

The Green Revolution succeeded in increasing the yield of crops mainly due to.

(a) Use of improved varieties of crops and 

(b) Use of agrochemicals (fertilizers and pesticides)

(ii) Organic Agriculture of Organic Farming:-

In the organic farming, farmers use manure, biofertilizers, biopesticides and biocontrols to increase the crop production instead of using artificial fertilizers and pesticides.

(iii) Genetically Engineered Crop-based:-

Agriculture:- The organic farming cannot increase the field of crop to appreciable degree. The solution of this problem is use of genetically modified crops. Genes use of plants, bacteria, fungi and animals have been changed by manipulations, therefore, these organims are called genetically modified organisms (GMOs). The behaviour of a GMOs depend on the nature of genes transferred nature of host plants, bacterium and animal. Food was also plays some role.

Answer (d) Insects

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