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#1
By Zain
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Hard
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Fact Checked
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11 Mar 2026
What is the primary role of the Cas9 protein during the application of CRISPR technology in genomic engineering?
💡 Explanation:In the CRISPR-Cas9 system, Cas9 functions as a nuclease (molecular scissors) that cuts both strands of the DNA at a location specified by the guide RNA. The subsequent repair of this break by the cell's own mechanisms allows for precise gene editing.
#2
By Zain
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Easy
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Fact Checked
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20 Feb 2026
Penicillin, discovered by Alexander Fleming, is primarily used in clinical practice to treat infections caused by which microorganism?
💡 Explanation:Alexander Fleming discovered Penicillin in 1928. As the first true antibiotic, it is specifically used to treat bacterial infections by inhibiting cell wall synthesis.
#3
By Zain
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Hard
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Fact Checked
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24 Jan 2026
Which 5′ to 3′ DNA primer is complementary to the template strand 3′-G C A T T A G C-5′?
💡 Explanation:The structure of DNA (double helix) dictates that strands must be complementary (A pairs with T, G pairs with C) and anti-parallel. The template 3'-G C A T T A G C-5' requires a primer running 5' to 3' with the reverse complement sequence: 5'-C G T A A T C G-3'. This question tests the application of the fundamental principles of DNA structure in molecular biology.
#4
By Zain
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Medium
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Fact Checked
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22 Jan 2026
The discovery of penicillin is considered the start of the age of which major medical breakthrough?
💡 Explanation:Penicillin was the first widely effective antimicrobial agent, and its introduction, beginning in the 1940s, is universally recognized as ushering in the 'age of antibiotics,' which fundamentally changed the treatment of bacterial infectious diseases.
#5
By Zain
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Hard
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Fact Checked
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20 Jan 2026
Which scientific discovery fundamentally introduced probabilistic laws over strict determinism at the atomic level?
💡 Explanation:Quantum Theory, through key concepts like the Heisenberg Uncertainty Principle and the probabilistic nature of the wave function (Born Rule), established that the precise, simultaneous determination of conjugate variables (like position and momentum) is fundamentally impossible. This inherent, non-reducible uncertainty invalidates the strict determinism that characterized classical Newtonian mechanics when applied to the atomic scale.
#6
By Zain
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Medium
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Fact Checked
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16 Jan 2026
What fundamental biological process was immediately explained by the double-helix model of DNA?
💡 Explanation:The complementary nature of the two strands in the double-helix model (A pairing with T, and C pairing with G) instantly suggested a mechanism—known as semi-conservative replication—by which each strand could serve as a template for accurately copying the genetic material.
#7
By The Quiz Wire
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Medium
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Fact Checked
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18 Dec 2025
Which phenomenon is primarily predicted by Einstein’s theory of General Relativity regarding light and mass?
💡 Explanation:General Relativity describes gravity as the curvature of spacetime. This theory predicts that light, traveling along the curved spacetime, will bend when passing near a massive object, a phenomenon known as gravitational lensing. Option A is a postulate of Special Relativity. Options B and D are principles of Quantum Mechanics.
#8
By The Quiz Wire
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Easy
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Fact Checked
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11 Dec 2025
What central principle did the Germ Theory of Disease establish regarding infectious diseases?
💡 Explanation:The Germ Theory of Disease, pioneered by scientists like Louis Pasteur and Robert Koch, established the principle that many diseases are caused by specific pathogenic microorganisms (germs). This fundamentally changed medicine, leading to modern sterile practices, sanitation, and vaccines.
#9
By The Quiz Wire
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Medium
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13 Nov 2025
Which physicist discovered X-rays in 1895?
💡 Explanation:Wilhelm Röntgen discovered X-rays, earning him the first Nobel Prize in Physics.
#10
By The Quiz Wire
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Medium
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13 Nov 2025
Who created the first widely accepted Periodic Table in 1869?
💡 Explanation:Dmitri Mendeleev formulated the Periodic Law and created the first predictive Periodic Table.
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