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Biological Databases (NCBI, Protein Data Bank) MCQs

Prepare for Biological Databases (NCBI, Protein Data Bank) MCQs with verified questions, past-paper solutions, and conceptual explanations for CSS, PMS, FPSC, PPSC, and NTS examinations.

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390420 MCQs Page 32710

Topic Notes: Biology

These notes summarize the key preparation context before you attempt the MCQs. Review the topic focus, then practice the questions below with answers and explanations.

Quick Overview

Practice Biology MCQs to prepare for CSS, PMS, FPSC, PPSC, SPSC, KPPSC, BPSC, NTS, and university entry tests in Pakistan. This section covers key theoretical concepts, syllabus topics, and repeated past paper questions related to Biology.

Topic-Wise Breakdown
Structured subject modules organized by difficulty and exam frequency.
Verified Answer Keys
Detailed explanations cross-referenced with standard textbooks and commission keys.
Complete Coverage
Covers fundamental definitions, advanced problem-solving, and recent exam trends.

How to Prepare Biology MCQs for Competitive Exams

Review each sub-topic systematically. Start with fundamental concepts, practice multiple-choice question sets under timed conditions, and note down questions you missed in your revision tracker. Select a specific topic from the list below to begin practice.

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327091
If 0.75x = 0.5y, then x : y is:
327092
A sum of Rs. 427 is to be divided among A, B, and C such that 3 times A's share, 4 times B's share, and 7 times C's share are all equal. Find the share of C.
327093
Salaries of Ravi and Sumit are in the ratio 2 : 3. If the salary of each is increased by Rs. 4000, the new ratio becomes 40 : 57. What is Sumit's salary?
327094
The ratio of the number of boys and girls in a college is 7 : 8. If the percentage increase in the number of boys and girls is 20% and 10% respectively, what will be the new ratio?
327095
Rs. 1210 were divided among A, B, and C such that A : B = 5 : 4 and B : C = 9 : 10. What is C's share?
327096
If x : y = 5 : 2, then (8x + 9y) : (8x + 2y) is:
327097
If 15% of x = 20% of y, then x : y is:
327098
What is the compounded ratio of (2 : 3), (4 : 5), and (6 : 7)?
327099
The sub-triplicate ratio of 64 : 125 is:
327100
The triplicate ratio of 2 : 3 is: