Tag: bio-chemistry

Quizzes (82) Questions (1918)

Questions Related to bio-chemistry

Multiple choice 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

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

  1. Variable

  2. 1:9

  3. 9:1

  4. 10:5
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In typical biological cells, the ratio of inorganic matter to organic matter is generally accepted as 1:9, reflecting the high concentration of organic compounds like proteins and lipids.

Multiple choice 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

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

  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
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

Multiple choice 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

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

  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.
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

Multiple choice 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

The centre for cellular and molecular biology is located at 

  1. Delhi

  2. Nagpur

  3. Mumbai

  4. Hyderabad
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

Multiple choice 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

Who among the following is the father of Indian cytology?

  1. A. K. Sharma

  2. P. Maheshwari

  3. B. P. Pal

  4. Lal Singhji
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

Multiple choice 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

The living substance of cell was named by Dujardin as____________________

  1. Biotic soup

  2. Jivam

  3. Sarcode

  4. Protoplasm
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

Multiple choice 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

The father of modern cytology is__________________

  1. Leeuwenhoek

  2. Robert Hooke

  3. C. P. Swanson

  4. A. K. Sharma
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Cytology is the branch of biology concerned with the structure and function of plant and animal cells. Where Leeuwenhoek is called the father of microbiology and Robert Hooke the father of cytology, Carl P Swanson is called the father of modern cytology. A K Sharma is called the father of Indian cytology.
So, the correct option is 'B'.


Multiple choice 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

"New cells arise from pre-existing cell" is the statement given by 

  1. Max Schultze

  2. R. Virchow

  3. Altmann

  4. Purkinje
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Rudolf Virchow famously stated "Omnis cellula e cellula", i.e., "All cells only arise from pre-existing cells."

Virchow was a major advocate of the cell theory and published an influential theory that cells arose from each other in a continuous series of generations. 
He opposed spontaneous generation and carried out experiments in the 1850's to show that nematodes do not arise spontaneously.

Multiple choice 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

Who first discovered nucleus in cell in 1831?

  1. Robert Hooke

  2. Robert Brown

  3. Altmann

  4. Swanson
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The nucleus was discovered by Robert Brown while he was working on orchids, under a microscope and he observed an opaque area, which he called the areola or nucleus. It is a site for the genetic material.

So, the correct answer is option B.