Tag: cell-the basic unit of life

Questions Related to cell-the basic unit of life

Simple one-celled cyanobacteria-like organisms developed on earth.

bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

  1. $5600$ million years

  2. $5000$ million years

  3. $4600$ million years

  4. $3600$ million years

  5. $3000$ million years

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Correct Option: A

The 'cell doctrine' was given by____________.

bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

  1. Robert Hooke

  2. Schwann, Schleiden and Virchow

  3. Dutrochet

  4. Huxley

Show answer
Correct Option: B
Explanation:

Cell theory was proposed by a German botanist, Matthias Schleiden and English zoologist, Theodor Schwann in the year 1839. Cell theory was considered as the most acceptable theory which, elucidated the functioning of a cell. The cell theory includes the following points -
1) All living things are made up of cells.
2) The cell is the smallest living thing that can perform all the functions of life.   
Later on, in the year 1855, Rudolf Virchow added a new point in cell theory that all cells must come from pre-existing cells, which was also known as "Omnis cellula e cellula". The modern cell theory is called as 'Cell Principle' or 'Cell Doctrine'.
So, the correct answer is option B.

Who reported that entity of an organism is not because of the cell but collection of many cells?  

bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

  1. Dutrochet

  2. Dujardin

  3. Robert Brown

  4. Schleiden and Schwann

Show answer
Correct Option: A
Explanation:

Leeuwenhoek was the first to see 'free-living cells' under his microscope. In 1809, Lamarck concluded that all living beings are formed of cells. Living substance was first observed by Corti in 1772 and was named sarcode by Dujardin in 1835. Dutrochet believed in the individuality of cells, i.e., living organisms are made up of a number of individual cells. The nucleus was discovered by Robert Brown and Schleiden and Schwann are credited with the formulation of the cell theory. Thus, the correct answer is option A.

The ratio of inorganic matter to organic matter in the cell is 

bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

  1. Variable

  2. 1:9

  3. 9:1

  4. 10:5

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Correct Option: B

Match the column I and II.

Column I Column II
(a) K.C. Mehta (i) Fluid mosaic model
(b) P. Maheshwari (ii) First recombinant plasmid
(c) Cohen and Boyer (iii) Haploid culture
(d) Singer and Nicolson (iv) Rust disease
bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

  1. (a)-i, (b)-iii, (c)-ii, (d)-iv

  2. (a)-iv, (b)-iii, (c)-ii, (d)-i

  3. (a)-i, (b)-ii, (c)-iii, (d)-iv

  4. (a)-ii, (b)-iii, (c)-iv, (d)-i

Show answer
Correct Option: B
Explanation:

  • K.C. Meta -  Investigated the effects of temperature on rust fungi growth.
  • P. Maheswari - Discovered the production of haploid by anther culture.
  • Cohen and Boyer - Discovered recombinant DNA technology.
  • Singer and Nicolson - proposed the fluid mosaic model of the cell membrane.

So the correct option is B.

Cell is called as the structural and functional units of life because_________

bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

  1. All organisms are formed of cells.

  2. All cells are biochemical reaction house.

  3. ATP is synthesized within cells.

  4. All of the above.

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Correct Option: D
Explanation:

Cells are called the structural and functional unit of life because all the living organisms are made up of cells and also all the functions taking place inside the body of organisms are performed by cells. Cells provide specific conditions, for the occurrence of the metabolic reactions. These have the specialized enzymes, which catalyze the biochemical reaction and regulates the functions of the body such as respiration (formation of ATP in the cell)
So, the correct answer is option D.

The term chromosome was given by

bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

  1. Waldeyer

  2. Strasburger

  3. Morgan

  4. Sutton and Boveri

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Correct Option: A
Explanation:

Schleiden and Virchow were recognized the coiled structures in nucleus as chromosomes but the term chromosome was coined by Von Waldeyer-Hartz, 

The centre for cellular and molecular biology is located at 

bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

  1. Delhi

  2. Nagpur

  3. Mumbai

  4. Hyderabad

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Correct Option: D
Explanation:

The center for cellular and molecular Biology or CCMB is located in Hyderabad. The research programs undergoing in CCMB includes the areas of biomedicine & diagnostics, evolution & development, gene regulation in prokaryotes and eukaryotes, host-parasite interactions, membrane biology, protein structure, bioinformatics, functional genomics, theoretical biology, etc.

Who among the following is the father of Indian cytology?

bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

  1. A. K. Sharma

  2. P. Maheshwari

  3. B. P. Pal

  4. Lal Singhji

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Correct Option: A
Explanation:

Arun Kumar Sharma or A. K. Sharma is the father of Indian cytology.

He developed various new methods for chromosome analysis and gives a new theory of speciation. He also demonstrated the role of repeat DNA sequences under stress conditions as well as in the control of various genetic characters in plants.

The living substance of cell was named by Dujardin as____________________

bio-chemistry cell-the basic unit of life introduction to cell discovery and cell theory cell discovery cell discovery and cell theory cell as structural and functional unit

  1. Biotic soup

  2. Jivam

  3. Sarcode

  4. Protoplasm

Show answer
Correct Option: C
Explanation:

  • Dujardin applied the name 'sarcode' to the free plasma without a covering to protect it from the contact with the outer world. So, the living things were named as a sarcode.

Thus, the correct answer is option C.