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Transcription is the process by which a segment of DNA is used as a template to synthesise a complementary RNA molecule (specifically mRNA) by the enzyme RNA polymerase. The central dogma of molecular biology is: DNA → (transcription) → RNA → (translation) → Protein. DNA from RNA would be reverse transcription.

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English QUESTION #485

Question 4

Our flight was __________ from Lahore to Islamabad airport.

Diverted✔️
Reflected
Deflected
Shifted

Correct Answer Logic:

Flights are 'diverted'

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Basic Mathematics QUESTION #4597

Question 5

Expand: $(x - 4)(x + 4)$

$x^2 - 16$✔️
$x^2 + 16$
$x^2 - 8x + 16$
$2x$

Correct Answer Logic:

Using $(a-b)(a+b) = a^2 - b^2$: $(x-4)(x+4) = x^2 - 16$

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3067

Question 6

The 'Isoelectric Point' is a concept often related to the stability of:

Gelatin✔️
Sugar
Alcohol
Glass

Correct Answer Logic:

The pH at which a molecule has no net charge (isoelectric point) affects the solubility of substances like gelatin.

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Urdu QUESTION #4461

Question 7

مصیبت میں کسی کے ____ آنا بھی نیکی ہے۔

پاس
کام✔️
ساتھ
ان میں کوئی نہیں

Correct Answer Logic:

The correct idiom is 'kaam aana' (کام آنا), which means to be useful or to help someone in distress.

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Economics QUESTION #1713

Question 8

Among the structural inefficiencies plaguing Pakistan's electricity sector, which specific operational failure has been most directly responsible for the sector's financial losses and the accumulation of circular debt?

Excess installed generation capacity relative to actual demand (overcapacity)
High transmission and distribution (T&D) losses combined with electricity theft and under-recovery✔️
Prohibitively high electricity tariffs that suppress industrial and household demand
None of these

Correct Answer Logic:

Pakistan's power sector inefficiency is primarily driven by high transmission and distribution (T&D) losses — officially around 17–20% but effectively higher when electricity theft (kundas) is included — combined with poor bill recovery rates from distribution companies (DISCOs). These losses mean that significant electricity is generated and distributed but not paid for, creating a cash flow shortfall that cascades into the circular debt. Overcapacity (capacity payments) is a contributing but secondary factor.

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Sociology QUESTION #1674

Question 9

The Frankfurt School theorists — particularly Adorno and Horkheimer — introduced the concept of the 'culture industry' to advance which critical argument about mass culture under advanced capitalism?

That capitalist production has successfully democratized access to genuine artistic culture
That mass-produced popular culture functions as a mechanism of ideological domination, standardizing tastes and pacifying critical consciousness✔️
That elite art forms have been displaced by a more egalitarian cultural production
That the decentralization of media has weakened the concentration of political power

Correct Answer Logic:

In 'Dialectic of Enlightenment' (1944), Adorno and Horkheimer argued that the culture industry — the mass production of standardized cultural commodities (film, music, radio) — serves capitalism by commodifying culture, manufacturing false needs, homogenizing taste, and preventing the development of critical consciousness that might challenge the existing social order.

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City and Regional Planning QUESTION #4992

Question 10

In regression analysis, if $R^2 = 0.64$ for predicting housing prices, what percentage of variance is explained?

36%
64%✔️
80%
100%

Correct Answer Logic:

$R^2$ (coefficient of determination) directly represents the proportion of variance in the dependent variable explained by independent variables. $R^2 = 0.64$ means 64% of housing price variation is explained by the model, leaving 36% unexplained.

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Professional QUESTION #1884

Question 11

Under Rule 5(1)(i) when the Authority is the President or Prime Minister who exercises the powers of the authority regarding suspension/leave?

The Federal Cabinet
The Chairman Senate
The Secretary Establishment Division✔️
The Chief Justice of Pakistan

Correct Answer Logic:

The proviso to Rule 5(1)(i) specifically states that where the authority is the President or Prime Minister these powers shall be exercised by the Secretary Establishment Division.

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Security Measures to Maintain Law and Order QUESTION #953

Question 12

What is the primary threat addressed by 'Man-Portable Air-Defense Systems' (MANPADS) security?

Ticket fraud
Surface-to-air missile threats✔️
Luggage theft
Unruly passengers

Correct Answer Logic:

ASF must patrol the surrounding vulnerable areas (VAs) to prevent attacks on low-flying aircraft.

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Physics QUESTION #982

Question 13

To obtain the given truth table ($A=0,B=0\to Y=1$; $A=0,B=1\to Y=1$; $A=1,B=0\to Y=0$; $A=1,B=1\to Y=1$), the logic gate placed at G is:

OR Gate
AND Gate✔️
NOR Gate
NAND Gate

Correct Answer Logic:

The circuit has two OR gates feeding into G. Checking the truth table: output is 0 only when $A=1, B=0$. This matches an AND gate at G, as the preceding OR gates produce inputs (1,0) for that row, and $1 \cdot 0 = 0$.

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English QUESTION #2752

Question 14

Choose the correct CONDITIONAL: 'If it rains

she ___ at home.'✔️
stays
will stay
would stay

Correct Answer Logic:

1

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Geography QUESTION #1247

Question 15

The process involved in Himalayan orogeny is:

Volcanism
Plate convergence✔️
Plate divergence
None of these

Correct Answer Logic:

The Himalayan mountain range was formed by the convergence (collision) of the Indian Plate and the Eurasian Plate, which began approximately 50 million years ago. As the Indian subcontinent moved northward and collided with Eurasia, the intervening Tethys Sea sediments were folded and uplifted to form the Himalayas. This is a classic example of continent-continent collision.

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Chemistry QUESTION #4352

Question 16

Majority of reactions taking place at ordinary temperatures with $-\Delta H$ are:

Endothermic
Exothermic✔️
Thermally unstable
Reversible

Correct Answer Logic:

Reactions with $-\Delta H$ (negative enthalpy change) release heat to the surroundings and are exothermic. Most spontaneous reactions at ordinary temperature are exothermic.

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Agronomy QUESTION #2105

Question 17

C4 photosynthesis confers agronomic advantages over C3 photosynthesis under high temperature and high irradiance conditions primarily because:

C4 plants have more chlorophyll and larger leaves than C3 plants
The C4 CO₂-concentrating mechanism (using PEP carboxylase in mesophyll cells to fix CO₂ as oxaloacetate/malate, then decarboxylating in bundle sheath cells to deliver high CO₂ to Rubisco) suppresses photorespiration and allows near-maximum photosynthesis at high temperatures when Rubisco oxygenase activity would otherwise dominate✔️
C4 plants have deeper root systems that access subsoil water inaccessible to C3 plants
C4 plants fix nitrogen more efficiently, requiring less protein investment in Rubisco

Correct Answer Logic:

At high temperatures, Rubisco's oxygenase activity (photorespiration) increases relative to carboxylase in C3 plants, wasting 30–50% of fixed carbon. C4 plants pump CO₂ to bundle sheath cells at 10–80× atmospheric concentration, suppressing oxygenase competition and photorespiration. This gives C4 crops (maize, sorghum, sugarcane, millet) higher radiation use efficiency, WUE, and NUE under tropical conditions.

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Basic Mathematics QUESTION #4620

Question 18

If $3^x = 81$, what is $x$?

$3$
$4$✔️
$27$
$5$

Correct Answer Logic:

$81 = 3^4$, so $x = 4$

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Urdu QUESTION #5220

Question 19

اردو نثر میں علامہ اقبال کی پہلی باقاعدہ تصنیف کا نام؟

ما بعد الموجودات
علم الاقتصاد✔️
اقتصادیات
ما بعد الاقتصادیات

Correct Answer Logic:

علم الاقتصاد علامہ اقبال کی پہلی باقاعدہ نثری تصنیف ہے جو معاشیات کے موضوع پر لکھی گئی۔

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Biology Zoology Botany QUESTION #1363

Question 20

In angiosperms, how many nuclei are present in a mature embryo sac?

6
7
8✔️
9

Correct Answer Logic:

A mature angiosperm embryo sac (megagametophyte) contains 8 nuclei organised into 7 cells: 3 antipodal cells (3 nuclei), 2 synergid cells (2 nuclei), 1 egg cell (1 nucleus), and 1 central cell with 2 polar nuclei (2 nuclei). Total = 3+2+1+2 = 8 nuclei in 7 cells. This is the standard Polygonum-type embryo sac.

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