Jacob and Monad studied lactose metabolism in E.Coli and proposed operon concept. Operon concept applicable for
The correct option is (A) : All prokaryotes
The Lac operon idea was developed by Jacob and Monad after their investigation of lactose metabolism in E. coli. The idea clarifies how lactose is transported and metabolised by Escherichia coli and many other intestinal bacteria. Every prokaryote can benefit from understanding the Lac-operon idea.
Match List I with List II.
List I | List II | ||
A | CCK | I | Kidney |
B | GIP | II | Heart |
C | ANF | III | Gastric gland |
D | ADH | IV | Pancreas |
List I List II A. CCK I. Kidney B. GIP II. Heart C. ANF III. Gastric gland D. ADH IV. Pancreas Choose the correct answer from the options given below:
How many different proteins does the ribosome consist of?
Which of the following statements are correct?
Choose the correct answer from the options given below:
Movement and accumulation of ions across a membrane against their concentration gradient can be explained by
Which micronutrient is required for splitting of water molecule during photosynthesis?
List - I | List – II | ||
A. | Residual Volume | i. | Maximum volume of air that can be breathed in after forced expiration |
B. | Vital Capacity | ii. | Volume of air inspired or expired during normal respiration |
C. | Expiratory Capacity | iii. | Volume of air remaining in lungs after forcible expiration |
D. | Tidal Volume | iv. | Total volume of air expired after normal inspiration |
List I | List II | ||
---|---|---|---|
A | Robert May | I | Species-Area relationship |
B | Alexander von Humboldt | II | Long term ecosystem experiment using out door plots |
C | Paul Ehrlich | III | Global species diversity at about 7 million |
D | David Tilman | IV | Rivet popper hypothesis |
The sequence of events by which a cell copies itself synthesizes other constituents of the cell and eventually splits into two daughter cells is termed the cell cycle. The cell synthesizes all its constituents in a sequential pattern to make sure the proper division and distribution of components that occurs between the two daughter cells. Therefore, we can say that the cell cycle is the period of time between the development of new daughter cells and their further division.
The cell cycle can be sub-divided into an additional category of Interphase. Meanwhile, the Interphase can be branched into 3 further stages, such as:
Read More: Cell Cycle and Cell Division
The division of the parent cells into two or more cells is called daughter cell, cell division takes place. In general, it occurs as a part of a larger cell cycle. All the cell reproduces by dividing into two, wherein each parental cell produces two daughter cells.
Cell division can be widely divided into several sub-segments that result from Mitosis and Meiosis.