Tag: evs - i

Questions Related to evs - i

After the launch of Aryabhatta, India became the ________ country to launch its own satellite.

evs - i discovery of universe human beings in space our pride - iii our scientist famous space scientists and astronauts space exploration space communications

  1. 3rd

  2. 4th

  3. 5th

  4. 6th

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Correct Option: D

Under whose leadership the Atomic Energy Department of India was established?

evs - i discovery of universe human beings in space our pride - iii our scientist famous space scientists and astronauts space exploration space communications

  1. Homi Jahangir Bhabha

  2. Vikram Sarabhai

  3. Satish Dhawan

  4. A.P.J. Abdul Kalam

Show answer
Correct Option: A
Explanation:

On 3 August 1954, India’s Department of Atomic Energy (DAE) was created under the direct charge of the Prime Minister Jawaharlal Nehru through a Presidential Order. Subsequently, following a Government Resolution dated 1 March 1958, the Atomic Energy Commission (AEC) was established in the Department of Atomic Energy. The DAE was headed by Dr. Homi Jagangir Bhabha, widely regarded as the father of Indian nuclear research. The body was formed to accelerate the pace of scientific progress in India, with special emphasis on atomic power.

Which of the following is known as building blocks of the body?

evs - i constituents of food dietary sources of proteins types of nutrients calorific value of nutrients

  1. Proteins

  2. Carbohydrates

  3. Fats

  4. None of the above

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Correct Option: A
Explanation:

A- Human body is majorly composed of proteins, which is important for our existence. Proteins are the main constituents of skin, muscles, organs, bones and nails.

Which statement is correct for biomolecules

evs - i constituents of food dietary sources of proteins types of nutrients calorific value of nutrients

  1. DNA is a polymer of ribonucleotides

  2. All carbohydrates break down into glucose

  3. RNA is single stranded and contain different purine

    base than DNA

  4. Sequence of amino acids determine primary structure

    of proteins

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Correct Option: D
Explanation:

The shape, size, structure and biological functions of proteins are determined by the number, type and arrangement of amino acids.

Signaling between cells usually results in the activation of protein

evs - i constituents of food dietary sources of proteins types of nutrients calorific value of nutrients

  1. Lipases

  2. Kinases

  3. Proteases

  4. Nucleases

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Correct Option: B
Explanation:

One of the important mechanisms of cell communication is through reversible phosphorylation and dephosphorylation of proteins. These reactions are catalysed by kinases and occur through a cascade mechanism.

Most abundant protein in the human body is

evs - i constituents of food dietary sources of proteins types of nutrients calorific value of nutrients

  1. Haemoglobin

  2. Keratin

  3. Collagen

  4. Immunoglobulin

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Correct Option: C
Explanation:

Collagen is the most abundant protein in the animal world which accounts for 30% of total protein content in the human body. Collagen is a key constituent of all the connective tissues. It is found in joints, bones, skin, hair, etc. This protein helps the skin to move, stretch and rebound into shape. It is present throughout the body and keeps the cells together. Without collagen the body would fall apart into pieces. 

Thus, the correct answer is option C.

The protein encoded by cry | Ab controls:

evs - i constituents of food dietary sources of proteins types of nutrients calorific value of nutrients

  1. Tobacco Budworm

  2. Corn Borer

  3. Bollworm

  4. Army worm

Show answer
Correct Option: B
Explanation:

The Bt toxin is encoded by a gene named cry. The protein encode by cry IAb control corn borers.The protein encoded by the genes cry I Ac and cry II Ab control the cotton boll worms.

  • Thus, the correct answer is 'Corn Borer'.

Protein are needed in diet because 

evs - i constituents of food dietary sources of proteins types of nutrients calorific value of nutrients

  1. All amino acids are not available in body

  2. During fasting body utilized proteins

  3. Proteins act as building blocks of our body

  4. All of the above

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Correct Option: D

The protein required for the transport of galactose across the cell membrane in E. coli is 

evs - i constituents of food dietary sources of proteins types of nutrients calorific value of nutrients

  1. Allolactase

  2. $\beta$-galactosidase

  3. Galactose permease

  4. Transcriptase

Show answer
Correct Option: C
Explanation:

The numerous permeases that belong to ABC superfamily of proteins is present in number of bacterial cell. The ATP is hydrolysed by these proteins  to transport specific amino acids, sugars, vitamins, or even peptides into the cells. One such permease is galactose permease, which is responsible for transportation of galactose.

Functions that are not normally performed by proteins is/are

evs - i constituents of food dietary sources of proteins types of nutrients calorific value of nutrients

  1. Hydrolysis for energy provision.

  2. Structural integrity of the cell.

  3. Regulation of metabolism.

  4. Defense mechanisms.

Show answer
Correct Option: A
Explanation:

Proteins are the most important and versatile biomolecules in living systems. They are involved in general body-building, catalytic role as enzymes, and body defence in immunological reactions. Energy currency of living systems are usually nucleotides like ATP. They are hydrolysed to provide energy as and when required.