Which of the following is a plasmid?
- pBR 322
- BamH I
- Sal I
- EcoR I
The Correct Option is A
Solution and Explanation
Top Questions on biotechnology
- The picture given below shows:
(a) Roots of a typical control tobacco crop plant (infected).
(b) Transgenic tobacco plant showing healthy roots even after deliberate infection by nematode.
Explain how this transformation was achieved in the tobacco plant.- CBSE CLASS XII - 2024
- Biology
- biotechnology
- (a) (i) Why should a cell be made competent to take up an alien DNA? How can a bacterial cell be made competent using calcium ions? Explain.
(ii) (1) State the importance of gel electrophoresis in biotechnology.
(2) Explain the principle on which this technique works.
(3) Mention why ethidium bromide is used in this technique.
OR
(b) (i) How was Bt cotton, the genetically modified crop, has greatly helped the cotton farmers to increase their crop yield?
(ii) Describe the mechanism that leads to the death of bollworms feeding on Bt cotton plants.- CBSE CLASS XII - 2024
- Biology
- biotechnology
- Write the role of ’ori’ and restriction site in the cloning vector pBR322.
- CBSE CLASS XII - 2024
- Biology
- biotechnology
- Assertion (A): Specific enzymes are used to degrade the cell wall in organisms to isolate the DNA from the cell.
Reason (R): Fungal cell wall is degraded by the enzyme cellulase.- CBSE CLASS XII - 2024
- Biology
- biotechnology
- Which one of the following pairs is not correctly matched?
- CBSE CLASS XII - 2024
- Biology
- biotechnology
Questions Asked in KEAM exam
- Let
\[ f(x) = \begin{cases} x\left( \frac{\pi}{2} + x \right), & \text{if } x \geq 0 \\ x\left( \frac{\pi}{2} - x \right), & \text{if } x < 0 \end{cases} \]
Then \( f'(-4) \) is equal to:- KEAM - 2024
- introduction to three dimensional geometry
If \( f'(x) = 4x\cos^2(x) \sin\left(\frac{x}{4}\right) \), then \( \lim_{x \to 0} \frac{f(\pi + x) - f(\pi)}{x} \) is equal to:
- KEAM - 2024
- introduction to three dimensional geometry
Let \( f(x) = \frac{x^2 + 40}{7x} \), \( x \neq 0 \), \( x \in [4,5] \). The value of \( c \) in \( [4,5] \) at which \( f'(c) = -\frac{1}{7} \) is equal to:
- KEAM - 2024
- Magnitude and Directions of a Vector
The general solution of the differential equation \( \frac{dy}{dx} = xy - 2x - 2y + 4 \) is:
- KEAM - 2024
- Magnitude and Directions of a Vector
- Evaluate the integral:
\[ \int \frac{4x \cos \left( \sqrt{4x^2 + 7} \right)}{\sqrt{4x^2 + 7}} \, dx \]
- KEAM - 2024
- Integral Calculus
Concepts Used:
Biotechnology
Biotechnology is a vast field of biology that involves the creation, production, and modification of useful products for human welfare using both the technology and the execution of living organisms and their components. An agricultural engineer, Karoly Ereky, coined the word "biotechnology" in 1919, achieving him the title of "Father of Biotechnology."
Principles of Biotechnology:
Among many, the two core techniques that entitled the birth of modern biotechnology are :
- Genetic Engineering is one of the methods of direct modifications of an organism's genome (i.e., DNA and RNA). It requires the introduction of new genes into host species to escalate function or trait, hence altering the host organism's phenotype.
- Bioprocess Engineering is one of the methods of maintaining sterile conditions to facilitate the growth of large quantities of desired microbes and other eukaryotic cells for the development of new or modified biotechnological products such as enzymes, vaccines, antibiotics, and other biotechnological products.