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Math Physics Chemistry Biology QUESTION #11276

A heterozygous tall plant (Tt) is crossed with a homozygous short plant (tt). What is the expected phenotypic ratio in the offspring?

All tall
All short
1 tall : 1 short✔️
3 tall : 1 short

Correct Answer Logic:

This is a test cross. The Tt parent produces T and t gametes (50% each), while the tt parent produces only t gametes. Offspring genotypes: 50% Tt (tall) and 50% tt (short). Phenotypic ratio = $1$ tall : $1$ short.

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Quantitative Reasoning QUESTION #8146

Question 5362

Wills argues that certain malarial parasites are especially (i)_______ because they have entered humans more recently than other species and therefore have had (ii)_______ time to evolve toward (iii)_______. Yet there is no reliable evidence that the most harmful Plasmodium species has in fact been in humans for a shorter time than less harmful species.

malignant .. insufficient .. benignity✔️
populous .. ample .. virulence
threatened .. adequate .. variability
malignant .. ample .. benignity

Correct Answer Logic:

The logic chain: recently entered humans → less time to evolve toward becoming harmless. Blank (i): malignant (harmful/dangerous) — these are the especially dangerous parasites. Blank (ii): recently entered = insufficient time to adapt. Blank (iii): the direction of evolution would be toward benignity (harmlessness/mildness) — older parasites evolve to coexist peacefully with hosts. 'Virulence' would mean evolving toward greater harm, which is the opposite of what long co-evolution produces.

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Mathematics QUESTION #6042

Question 5363

Find the circle passing through the foci of the ellipse $\dfrac{x^2}{16}+\dfrac{y^2}{9}=1$ and having its centre at $(0,3)$.

$x^2+y^2-6y-7=0$✔️
$x^2+y^2-6y+7=0$
$x^2+y^2-6y-5=0$
$x^2+y^2-6y+5=0$

Correct Answer Logic:

For the ellipse $\frac{x^2}{16}+\frac{y^2}{9}=1$: $a^2=16, b^2=9$, so $c^2=16-9=7$, giving foci at $(\pm\sqrt{7},0)$.

The circle has centre $(0,3)$. Radius $r=$ distance from $(0,3)$ to $(\sqrt{7},0)$:

$r^2=(\sqrt{7}-0)^2+(0-3)^2=7+9=16\Rightarrow r=4$

Equation: $x^2+(y-3)^2=16\Rightarrow x^2+y^2-6y+9=16\Rightarrow x^2+y^2-6y-7=0$

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HR and Management QUESTION #6458

Question 5364

When organizations ask HR managers for assistance in 'matching the distinctive competencies of the firm's human resources to the mission of the organization,' this represents:

Operational HR management
Strategic HR management✔️
Tactical HR planning
Administrative HR compliance

Correct Answer Logic:

This represents strategic HR management - aligning human resources (their distinctive competencies) with organizational strategy (mission). It moves HR from purely operational/administrative functions to strategic business partner role.

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Maths QUESTION #2908

Question 5365

Find the area of a square whose perimeter is $24$ cm.

$36\text{ cm}^2$✔️
$16\text{ cm}^2$
$48\text{ cm}^2$
$24\text{ cm}^2$

Correct Answer Logic:

Side $= 24/4 = 6$. Area $= 6^2 = 36$.

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English QUESTION #2795

Question 5366

Choose the word that BEST COMPLETES the sentence: 'He spoke so ___ that nobody could hear him.'

loud
loudly✔️
louder
loudest

Correct Answer Logic:

An adverb is needed to modify the verb 'spoke'. 'Loudly' is the adverb form of 'loud' and correctly describes how he spoke.

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Ability / HR / Governance / Special Education QUESTION #1804

Question 5367

Under Rule 13(1), what is the minimum response time for international competitive bidding from the date of publication of the advertisement or notice?

Fifteen days
Twenty-one days
Thirty days✔️
Forty-five days

Correct Answer Logic:

Rule 13(1) sets a minimum response time of fifteen days for national competitive bidding and thirty days for international competitive bidding from the date of first publication of the advertisement or notice, with no time limit applicable in cases of emergency.

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Social Studies QUESTION #10062

Question 5368

The nineteenth-century theoretical view holding that all human societies pass through a similar sequence of developmental stages is called:

Unilineal evolutionism✔️
Multilinear evolutionism
Neo-evolutionism
None of these

Correct Answer Logic:

Unilineal evolutionism proposed a single, universal sequence of developmental stages for all societies.

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English QUESTION #8553

Question 5369

We regret that we cannot comply _______ your request.

to
with✔️
at
on

Correct Answer Logic:

'Comply with' means follow or obey.

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MBBS QUESTION #10351

Question 5370

Long-chain fatty acids must be transported into the mitochondrial matrix for beta-oxidation via a specific carrier system, impaired in carnitine palmitoyltransferase (CPT) deficiency. This transport system is known as the:

Carnitine shuttle✔️
Malate-aspartate shuttle
Glycerol-3-phosphate shuttle
Citrate shuttle

Correct Answer Logic:

The carnitine shuttle — comprising CPT-I (outer mitochondrial membrane), carnitine-acylcarnitine translocase, and CPT-II (inner membrane) — converts long-chain fatty acyl-CoA to acylcarnitine for transport into the mitochondrial matrix, where it is reconverted to acyl-CoA for beta-oxidation; the malate-aspartate and glycerol-3-phosphate shuttles instead transport reducing equivalents (NADH) rather than fatty acids.

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English Literature QUESTION #684

Question 5371

What emotional tone is prevalent in the final stanza of Keats' Ode to Autumn?

Melancholic✔️
Joyful
Anxious
None of these

Correct Answer Logic:

The final stanza, with its imagery of "wailful choir" and "gathering swallows," evokes a sense of loss and mourning for the passing season.

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Agronomy QUESTION #2043

Question 5372

The term 'luxury consumption' of nutrients by plants refers to:

Deficiency symptoms appearing despite adequate soil nutrient levels
Uptake of a nutrient above the level required for maximum growth when that nutrient is in excess supply, without proportional increase in yield✔️
The process of active transport of nutrients against concentration gradients
The preferential uptake of macronutrients over micronutrients

Correct Answer Logic:

Luxury consumption occurs when a nutrient is present in excess — the plant absorbs more than needed for maximum growth without a corresponding yield increase. Potassium is the classic example: plants absorb K above requirements when soil K is high, which can induce Mg and Ca deficiencies (antagonism) and waste fertilizer.

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Ability / HR / Governance / Special Education QUESTION #5644

Question 5373

Under the GFR principles enforced by the PAO the principle of 'Prudence' requires that expenditure must not be prima facie more than the occasion demands. A government servant incurs lavish hospitality expenditure at a public function claiming it is within the budget allocation. Which principle is MOST directly violated even if funds are available?

Limitations — because actual expenditure may approach the budget allocation
Prudence — because every government servant must exercise the same vigilance over public funds as a person of ordinary prudence would over their own money✔️
Public Advantage — because the expenditure benefits a section of the community
Propriety — because high standards of financial propriety require formal approval

Correct Answer Logic:

Prudence directly applies: expenditure must not be prima facie more than the occasion demands and every government servant must exercise the same vigilance over public funds as a person of ordinary prudence would over their own money. Lavish hospitality directly contradicts this standard even if within budget.

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Math Physics Chemistry Biology QUESTION #575

Question 5374

In __________ zone the light is insufficient to support photosynthesis.

Desert
Profundal✔️
Littoral
All of these

Correct Answer Logic:

Profundal zone lacks sufficient light

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Islamic Studies QUESTION #8214

Question 5375

The age of Hazrat Usman (RA) at the time of his martyrdom was:

80✔️
78
76
74

Correct Answer Logic:

Hazrat Usman ibn Affan (RA) was approximately 82 years old (close to 80) when he was martyred on 18 Dhul Hijjah 35 AH (656 CE). He was born in 576 CE in Makkah and was among the earliest converts to Islam. He served as the third Caliph for 12 years (644-656 CE). During his martyrdom, he was reciting the Quran when rebels attacked him, and his blood fell on the verse: 'Allah will suffice you against them.'

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Maths QUESTION #2843

Question 5376

At what rate of Simple Interest will Rs. 4500 amount to Rs. 5400 in 4 years?

4%
5%✔️
6%
7%

Correct Answer Logic:

SI $= 5400 - 4500 = 900$. Using $SI = \dfrac{P \times R \times T}{100}$: $900 = \dfrac{4500 \times R \times 4}{100} \Rightarrow 900 = 180R \Rightarrow R = 5\%$.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3081

Question 5377

The 'Axon' is a structure specifically found in which type of cell?

Osteocyte
Neuron✔️
Erythrocyte
Leukocyte

Correct Answer Logic:

The axon is the long threadlike part of a nerve cell along which impulses are conducted.

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Physics QUESTION #379

Question 5378

Tuning of the radio is the best example of electrical __________

Resonance✔️
Resistance
Current
None of these

Correct Answer Logic:

Radio tuning uses LC circuit resonance

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Physics QUESTION #6994

Question 5379

Four equal point charges $Q$ are placed in the $xy$-plane at positions $(0,2)$, $(4,2)$, $(4,-2)$ and $(0,-2)$ (in metres). What is the work done in bringing a fifth charge $Q$ from infinity to the origin?

$\dfrac{Q^2}{4\pi\varepsilon_0}\left(1 + \dfrac{1}{\sqrt{3}}\right)$
$\dfrac{Q^2}{4\pi\varepsilon_0}\left(1 + \dfrac{1}{\sqrt{5}}\right)$✔️
$\dfrac{Q^2}{2\sqrt{2}\,\pi\varepsilon_0}$
$\dfrac{Q^2}{4\pi\varepsilon_0}$

Correct Answer Logic:

Work done = $Q \times V_{origin}$, where $V_{origin}$ is the potential at origin due to the four charges.

Distances from origin:

$(0,2)$: $r_1 = 2$
$(0,-2)$: $r_2 = 2$
$(4,2)$: $r_3 = \sqrt{16+4} = \sqrt{20} = 2\sqrt{5}$
$(4,-2)$: $r_4 = \sqrt{20} = 2\sqrt{5}$

$V = \frac{Q}{4\pi\varepsilon_0}\left(\frac{1}{2}+\frac{1}{2}+\frac{1}{2\sqrt{5}}+\frac{1}{2\sqrt{5}}\right) = \frac{Q}{4\pi\varepsilon_0}\left(1 + \frac{1}{\sqrt{5}}\right)$

Work $= QV = \dfrac{Q^2}{4\pi\varepsilon_0}\left(1+\dfrac{1}{\sqrt{5}}\right)$

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3495

Question 5380

Which method is most commonly used to extract volatile oils from plants?

Maceration
Steam Distillation✔️
Soxhlet Extraction
Cold Pressing

Correct Answer Logic:

Steam distillation is the standard industrial method for capturing volatile oils.

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