Question

Q. Consider the following pairs:

1. Blue Biotechnology	Hydroponics
2. Grey Biotechnology	Removal of pollutants
3. Cry 1AC	Insecticide
4. Cas9	Palindromic DNA sequence

Which of the above pairs are correctly matched?

• A. 2 and 4 only
• B. 4 only
• C. 2 and 3 only
• D. 1, 2, 3 and 4

Answer 1

The correct option is C 2 and 3 only

Explanation:

• Pair 1 is incorrect: Blue biotechnology deals with aquatic environments along with the Marine organisms to generate new sources of energy, develop new drugs, extract useful resources or develop new varieties of marine organisms.
• Pair 2 is correct: Grey Biotechnology is related to environmental applications, especially focused on the maintenance of biodiversity and the removal of pollutants/contaminants using microorganisms and plants to isolate and dispose of different substances such as heavy metals and hydrocarbons.
• Pair 3 is correct: Cry 1AC protein and other members of the family are specifically toxic to the insect orders Lepidoptera, Coleoptera, Hymenoptera, and Diptera, and also to nematodes. Cry proteins are poisonous which are secreted in crystal form by Bacillus thuringiensis during a specific growth process. The toxin gets encoded by a gene called cry. Thuringiensis is incorporated in many crop plants such as Bt cotton, Bt corn, etc. to provide insect resistance.
• Pair 4 is incorrect: The Cas9 is not a palindrome sequence; rather it's an enzyme responsible for locating and cutting target DNA, both in natural and in artificial CRISPR/Cas systems. CRISPR stands for “clustered regularly interspaced short palindromic repeats,” which describes the unique DNA sequences that lie within other continuously repeating DNA sequences in bacterial genomes.