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Biology QUESTION #7247

Specialized granules responsible for colouration of cells
Structures responsible for organizing the shape of cells
Inclusion bodies lying free inside the cells for carrying out various metabolic activities
Internal membrane systems that become extensive and complex in photosynthetic bacteria✔️

Correct Answer Logic:

In prokaryotes, chromatophores are internal membrane systems (invaginations of plasma membrane) that become extensive and complex in photosynthetic bacteria such as purple bacteria and green sulfur bacteria. They bear photosynthetic pigments and are functionally analogous to chloroplasts.

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Accounting & Finance QUESTION #9662

Question 1642

In which system of branch accounting are the accounts Branch Stock Account, Branch Debtors Account, Branch Adjustment Account, and Branch Stock Reserve Account all simultaneously maintained?

Debtor System
Income Statement System
Stock and Debtors System✔️
Independent Branch System

Correct Answer Logic:

The Stock and Debtors System uses all six accounts: Branch Stock Account, Branch Debtors Account, Branch Expenses Account, Branch Adjustment Account, Goods Sent to Branch Account, and Branch Stock Reserve Account. This system is used when goods are sent at pro-forma invoice price and the branch is large.

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Education QUESTION #6896

Question 1643

A student disrupts others during a group activity and the teacher states: 'If you continue to disrupt the group, you will work alone for the rest of the session.' This consequence is applied after a prior agreement with the student. According to Dreikurs' model, this is BEST described as which type of consequence?

Punitive consequence applied to reinforce teacher authority
Negative reinforcement designed to extinguish disruptive behavior
A logical consequence with a direct, meaningful connection to the misbehavior✔️
An assertive discipline intervention based on Canter's model

Correct Answer Logic:

A logical consequence, as defined by Dreikurs, has a clear, rational connection to the misbehavior — if you disrupt the group, you lose the privilege of being in the group. It is not arbitrary punishment; it must be pre-discussed and agreed upon, and it must directly relate to what the student did. This makes it educationally meaningful rather than merely punitive.

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Verbal Reasoning QUESTION #8112

Question 1644

The number $0.01$ is how many times as great as the number $(0.0001)^2$?

$10^2$
$10^4$
$10^6$✔️
$10^8$

Correct Answer Logic:

$(0.0001)^2 = (10^{-4})^2 = 10^{-8}$

$0.01 = 10^{-2}$

$\dfrac{0.01}{(0.0001)^2} = \dfrac{10^{-2}}{10^{-8}} = 10^{-2-(-8)} = 10^6$

So $0.01$ is $10^6$ times as great as $(0.0001)^2$.

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Security Measures to Maintain Law and Order QUESTION #928

Question 1645

What is the goal of 'Behavioral Detection' in a terminal?

Counting passengers
Identifying stress indicators in individuals✔️
Checking ticket validity
Monitoring retail sales

Correct Answer Logic:

Observing signs of nervousness or agitation helps identify persons who may intend to commit an unlawful act.

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Reading and Writing (Module-1) QUESTION #5363

Question 1646

A harpsichord may look just like a piano, but the difference between the two instruments is easy to hear. When a harpsichord's keys are pressed, the strings inside the ______ are plucked, not struck. Which choice completes the text so that it conforms to the conventions of Standard English?

instrument:
instrument✔️
instrument-
instrument,

Correct Answer Logic:

No punctuation is needed between the noun 'instrument' and the verb 'are plucked' in this simple sentence structure.

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Math Physics Chemistry Biology QUESTION #7735

Question 1647

Which substance in semen helps facilitate sperm transport by causing uterine contractions?

Androgen
Prostaglandins✔️
Oxytocin
Testosterone

Correct Answer Logic:

Prostaglandins in seminal fluid stimulate smooth muscle contractions in the female reproductive tract, aiding sperm movement toward the egg. Oxytocin is a hormone; androgens/testosterone are male sex hormones.

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Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences) QUESTION #5785

Question 1648

If a drug is an imitation of another drug or resembles another drug to deceive, it is:

Misbranded
Spurious✔️
Substandard
Counterfeit

Correct Answer Logic:

A drug that imitates another is classified as spurious[cite: 7].

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General Abilities QUESTION #2887

Question 1649

Simplify: $(x + 3)(x - 3)$

$x^2 + 9$
$x^2 - 9$✔️
$x^2 - 6x + 9$
$2x - 6$

Correct Answer Logic:

This follows the identity $(a+b)(a-b) = a^2 - b^2$. Thus, $x^2 - 3^2 = x^2 - 9$.

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Pharmacokinetics and Pharmacodynamics QUESTION #3836

Question 1650

An adult receives $100$ mg of a drug IV and achieves a plasma concentration of $2.5\ \mu\text{g/mL}$. Assuming uniform distribution in body water, what is the apparent volume of distribution?

$0.4$ L
$4$ L
$40$ L✔️
$400$ L

Correct Answer Logic:

$V_d = \dfrac{\text{Dose}}{\text{Concentration}} = \dfrac{100\ \text{mg}}{2.5\ \mu\text{g/mL}} = \dfrac{100{,}000\ \mu\text{g}}{2.5\ \mu\text{g/mL}} = 40{,}000\ \text{mL} = 40\ \text{L}$.

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Physics QUESTION #1039

Question 1651

Two cities X and Y connected by buses every T min. A girl on scooter at 60 km/h sees buses every 30 min in her direction and every 10 min opposite. Period T and bus speed:

10 min, 90 km/h
15 min, 120 km/h✔️
9 min, 40 km/h
25 min, 100 km/h

Correct Answer Logic:

Let bus speed $=v$, period $=T$. Relative speed with girl (same direction): $v-60$. Buses come every 30 min: $\frac{vT}{v-60}=30$. Opposite direction: $\frac{vT}{v+60}=10$. Dividing: $\frac{v+60}{v-60}=3\Rightarrow v+60=3v-180\Rightarrow v=120\ \text{km/h}$. Then $T=\frac{10(120+60)}{120}=15\ \text{min}$.

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General Abilities QUESTION #4614

Question 1652

Simplify: $2(3x + 1) + 4x$

$10x + 2$✔️
$6x + 6$
$6x + 2$
$10x + 1$

Correct Answer Logic:

$2(3x+1) + 4x = 6x + 2 + 4x = 10x + 2$

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Administration QUESTION #9563

Question 1653

The concept of 'span of control' and 'organizational levels' are inversely related. A government ministry decides to increase the span of control of its Joint Secretaries from 4 to 8 subordinates. What organizational consequence necessarily follows?

The organization becomes taller with more hierarchical levels to maintain effective supervision
The organization becomes flatter with fewer hierarchical levels, reducing communication layers but increasing supervisory load✔️
The organization requires more managers to maintain the same ratio of supervision across all levels
The organization shifts from functional to geographic departmentalization to manage the wider supervisory responsibility

Correct Answer Logic:

Span of control and organizational levels are inversely related: wider span = fewer levels (flatter structure); narrower span = more levels (taller structure). Increasing span from 4 to 8 means each manager supervises more people, reducing the need for additional management tiers — producing a flatter hierarchy with fewer intermediary levels.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3496

Question 1654

'Clove' (Eugenia caryophyllus) is used in dentistry as a local anesthetic due to its high content of:

Menthol
Eugenol✔️
Thymol
Limonene

Correct Answer Logic:

Eugenol provides the characteristic smell and numbing effect of clove oil.

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Pakistan Affairs QUESTION #320

Question 1655

In which district is the Shrine of Shah Abdul Latif Bhittai located?

Hyderabad
Matiari✔️
Dadu
Thatta

Correct Answer Logic:

The shrine of the famous Sufi poet is located in Bhit Shah, which falls under District Matiari.+1

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Chemistry QUESTION #1437

Question 1656

The raw materials for glass manufacturing typically include:

Limestone and sand
Sand, soda ash, and lime✔️
Clay and sodium hydroxide
None of these

Correct Answer Logic:

Standard soda-lime glass (the most common type) is manufactured from three primary raw materials: silica sand ($\text{SiO}_2$), soda ash (sodium carbonate, $\text{Na}_2\text{CO}_3$), and limestone/lime ($\text{CaCO}_3$/$\text{CaO}$). The soda ash lowers the melting point, while lime improves chemical durability. The mixture is melted at about 1500°C.

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Geography QUESTION #1244

Question 1657

The colour of a star is an indication of its:

Size
Distance away
Surface temperature✔️
None of these

Correct Answer Logic:

The colour of a star directly indicates its surface temperature. Cool stars (around 3,000 K) appear red; medium-temperature stars like the Sun (~5,500 K) appear yellow-white; hot stars (30,000+ K) appear blue-white. This is described by Wien's Displacement Law. A star's colour does not directly indicate its size or distance.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3189

Question 1658

In muscle contraction, $Ca^{2+}$ ions bind to which protein to expose the binding sites on actin?

Myosin
Troponin✔️
Tropomyosin
Actin

Correct Answer Logic:

Calcium binding to troponin causes tropomyosin to move, allowing myosin to attach to actin.

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General Knowledge QUESTION #4826

Question 1659

The largest island in the Indian Ocean is which of the following?

Sri Lanka
Sumatra
Madagascar✔️
Borneo

Correct Answer Logic:

Madagascar is the largest island in the Indian Ocean, with an area of approximately 587,041 square kilometers. It is also the world's fourth-largest island overall.

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English QUESTION #2784

Question 1660

Choose the correct word: 'She gave a ___ speech at the ceremony.' (Note: 'Complement' means something that completes; 'Compliment' means an expression of praise)

Complement
Complimentary
Complementary
Compliment✔️

Correct Answer Logic:

A 'compliment' is an expression of praise or admiration. 'She gave a compliment speech' — wait, the correct answer here is 'Compliment' (praise). Note: 'complement' relates to completing something, while 'compliment' is about flattery/praise.

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