Q. What is the purpose of using a promoter in a recombinant DNA molecule? (2021)
A.
To initiate DNA replication
B.
To enhance the stability of the DNA
C.
To drive the expression of the inserted gene
D.
To facilitate DNA repair
Solution
A promoter is a DNA sequence that initiates transcription of a particular gene, driving the expression of the inserted gene in a recombinant DNA molecule.
Correct Answer:
C
— To drive the expression of the inserted gene
Q. What is the purpose of using a selectable marker in a cloning vector? (2021)
A.
To enhance the stability of the vector
B.
To allow for the identification of successfully transformed cells
C.
To increase the replication rate of the vector
D.
To facilitate the insertion of foreign DNA
Solution
Selectable markers are genes that confer resistance to antibiotics or other substances, allowing for the identification of cells that have successfully taken up the vector.
Correct Answer:
B
— To allow for the identification of successfully transformed cells
Q. What is the purpose of using a selectable marker in genetic engineering? (2023)
A.
To enhance gene expression
B.
To identify successfully transformed cells
C.
To increase DNA stability
D.
To promote cell division
Solution
Selectable markers are genes that confer resistance to antibiotics or other substances, allowing researchers to identify cells that have successfully taken up the recombinant DNA.
Correct Answer:
B
— To identify successfully transformed cells
Biology is a crucial subject for students preparing for the NEET exam, as it covers essential concepts that form the foundation of life sciences. Practicing MCQs and objective questions in Biology not only enhances your understanding but also boosts your confidence during exams. Regular practice with important questions helps in identifying key areas and improves your overall exam preparation.
What You Will Practise Here
Cell Structure and Function
Genetics and Evolution
Human Physiology and Anatomy
Plant Physiology and Morphology
Ecology and Environment
Biotechnology and its Applications
Reproduction and Development in Organisms
Exam Relevance
The topics covered in Biology are integral to various examinations, including CBSE, State Boards, NEET, and JEE. In NEET, Biology constitutes a significant portion of the question paper, often comprising around 50% of the total marks. Common question patterns include multiple-choice questions that test both conceptual understanding and factual knowledge, making it essential to be well-prepared with objective questions.
Common Mistakes Students Make
Confusing similar terms, such as mitosis and meiosis.
Overlooking diagrams and their labels, which are often crucial for answering questions.
Neglecting the application of concepts in real-life scenarios.
Rushing through questions without fully understanding what is being asked.
FAQs
Question: What are the best ways to prepare for Biology (NEET) MCQs? Answer: Regularly practice MCQs, review important concepts, and focus on understanding diagrams and processes.
Question: How can I improve my accuracy in answering objective questions? Answer: Take timed quizzes, analyze your mistakes, and revisit challenging topics to strengthen your grasp.
Start solving practice MCQs today to enhance your understanding and readiness for the NEET exam. Every question you tackle brings you one step closer to your goal!
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