Reading Mode - Questions

Math Physics Chemistry Biology QUESTION #11373

Cell membranes contain channels through which movement of transport can take place by active and passive transport.

Glycoproteins
Carrier proteins✔️
Lipids
Carbohydrates

Correct Answer Logic:

Carrier proteins (transport proteins) span the cell membrane and facilitate both active transport (using ATP, e.g., Na⁺/K⁺-ATPase) and passive transport (facilitated diffusion, e.g., glucose transporters). They bind specific molecules and undergo conformational changes to move them across the membrane.

Uploaded by: Fani Warraich

Dairy Food Science and Technology QUESTION #5978

Question 5722

The minimum fat content of ice cream as per US FDA 21 CFR 135.110 is:

$5\%$
$8\%$
$10\%$✔️
$12\%$

Correct Answer Logic:

Under US FDA regulations (21 CFR 135.110), ice cream must contain $\geq 10\%$ milk fat and $\geq 20\%$ total milk solids, with $\geq 1.6\;\text{lb}$ food solids per gallon. Reduced-fat ice cream has $7.5\text{–}9.9\%$ fat; light ice cream has $\leq 50\%$ of reference fat.

Uploaded by: Fani Warraich

Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3497

Question 5723

'Peppermint Oil' is obtained from the leaves of:

Mentha piperita✔️
Foeniculum vulgare
Coriandrum sativum
Eucalyptus globulus

Correct Answer Logic:

Mentha piperita is the source of peppermint oil, used as a carminative.

Uploaded by: Fani Warraich

Reading and Writing (Module-1) QUESTION #10461

Question 5724

Environmentalists hailed the new regulation as -------, insisting it would finally ------- decades of unchecked industrial runoff.

ineffectual . . worsen
salutary . . curb✔️
detrimental . . accelerate
superfluous . . ignore

Correct Answer Logic:

A beneficial ('salutary') regulation would help 'curb,' or restrain, pollution.

Uploaded by: Fani Warraich

Bio-Technology QUESTION #10560

Question 5725

Catabolite repression in microorganisms typically results in:

Simultaneous utilisation of all available carbon sources
Preferential use of the most favourable carbon source (e.g. glucose over lactose)✔️
Induction of all catabolic enzymes at equal rates
Irreversible repression of all biosynthetic operons

Correct Answer Logic:

Catabolite repression (glucose effect) occurs when a preferred carbon source (e.g. glucose) suppresses expression of enzymes needed to catabolise alternative substrates (e.g. lactose). In E. coli, glucose lowers cAMP levels, reducing activation of the CAP/CRP complex needed to transcribe the lac operon. This causes diauxic growth — sequential substrate utilisation.

Uploaded by: Fani Warraich

Nursing QUESTION #9207

Question 5726

A researcher reports a confidence interval of $95\% \text{ CI}: [2.1, 8.7]$ for a mean difference in pain scores. What is the correct interpretation?

There is a 95% probability that the true mean falls within this range
If the study were repeated 100 times, approximately 95 of the resulting CIs would contain the true population mean✔️
The sample mean has a 95% chance of being between 2.1 and 8.7
There is a 5% chance that the results are due to chance alone

Correct Answer Logic:

Correct Answer: B

The frequentist interpretation of a 95% confidence interval is:
'If this study were repeated many times, 95% of the constructed confidence intervals would contain the true population parameter.'

Common misconceptions to avoid:

❌ It is NOT correct to say 'there is a 95% probability the true mean lies in this interval' — the true mean is fixed, not probabilistic
❌ It does NOT mean 95% of individual values fall within the range

Clinical significance of this CI: Since the entire interval $[2.1, 8.7]$ is above zero, this suggests the difference is statistically significant at $\alpha = 0.05$. If the CI had included zero, the result would be non-significant.

Uploaded by: Fani Warraich

Chemistry QUESTION #7801

Question 5727

Homolytic fission of the C–H bond in an alkane produces:

Alkyl free radical✔️
Carbonation
Carbocation
Methylpropane

Correct Answer Logic:

Homolytic bond cleavage: each atom takes one electron, forming free radicals (e.g., methyl radical •CH₃). Heterolytic fission gives carbocations or carbanions.

Uploaded by: Fani Warraich

Math Physics Chemistry Biology QUESTION #11283

Question 5728

Which enzyme is used to join DNA fragments during recombinant DNA technology?

Restriction endonuclease
DNA ligase✔️
DNA polymerase
Reverse transcriptase

Correct Answer Logic:

DNA ligase catalyzes the formation of phosphodiester bonds between adjacent DNA fragments, 'gluing' them together. Restriction enzymes cut DNA, DNA polymerase synthesizes DNA, and reverse transcriptase synthesizes DNA from an RNA template.

Uploaded by: Fani Warraich

Civil Engineering QUESTION #6579

Question 5729

A barrage constructed across a river is primarily designed for:

River diversion✔️
Water storage
River diversion and storage
Recreational purposes

Correct Answer Logic:

A barrage is a low-head hydraulic structure built primarily to divert river water into canals/channels for irrigation. Unlike a dam, it provides minimal storage.

Uploaded by: Fani Warraich

Boilers Mechanical Engineering QUESTION #2548

Question 5730

The principal axes of a cross-section are axes about which:

The moment of inertia is maximum only
The product of inertia is zero AND the moments of inertia are extreme (max/min)✔️
The polar moment of inertia is minimum
All second moments are equal

Correct Answer Logic:

Principal axes are defined by two conditions: (1) $I_{xy}=0$ (product of inertia vanishes), and (2) the second moments $I_x$ and $I_y$ attain their absolute maximum and minimum values, called principal moments of inertia.

Uploaded by: Fani Warraich

General Knowledge QUESTION #9027

Question 5731

Allama Iqbal qualified for his Ph.D degree from which university?

Punjab University Lahore
Oxford University (UK)
Cambridge University (UK)
Munich University (Germany)✔️

Correct Answer Logic:

Iqbal earned his PhD from Munich University.

Uploaded by: Fani Warraich

Physics QUESTION #4400

Question 5732

A phase difference of $90°$ is equal to:

$\pi$ radians
$\dfrac{\pi}{2}$ radians✔️
$\pi n$ radians
$\dfrac{\pi}{4}$ radians

Correct Answer Logic:

Converting degrees to radians: $\theta_{rad} = \theta_{deg} \times \dfrac{\pi}{180}$. So $90° = 90 \times \dfrac{\pi}{180} = \dfrac{\pi}{2}$ radians.

Uploaded by: Fani Warraich

Pakistan Affairs QUESTION #311

Question 5733

What was the official language declared in 1956 constitution?

Urdu
Bengali
Hindi
Both Urdu & Bengali✔️

Correct Answer Logic:

The 1956 Constitution granted official status to both Urdu and Bengali to satisfy regional demands.+3

Uploaded by: Fani Warraich

ETAG General Aptitude QUESTION #3763

Question 5734

In a classroom survey, 10 pupils prefer Mathematics, 12 prefer English, 4 like both subjects, and 6 like neither. What is the total number of pupils in the class?

18
20
24✔️
32

Correct Answer Logic:

Total = (Math + English - Both) + Neither = (10 + 12 - 4) + 6 = 18 + 6 = 24.

Uploaded by: Fani Warraich

Mathematics QUESTION #7458

Question 5735

The equation of the line passing through $(-4, 3, 1)$, parallel to the plane $x + 2y - z - 5 = 0$ and intersecting the line $\frac{x+1}{-3} = \frac{y-3}{2} = \frac{z-2}{-1}$ is:

$\frac{x-4}{2} = \frac{y+3}{1} = \frac{z+1}{4}$
$\frac{x+4}{1} = \frac{y-3}{1} = \frac{z-1}{3}$
$\frac{x+4}{3} = \frac{y-3}{-1} = \frac{z-1}{1}$✔️
$\frac{x+4}{-1} = \frac{y-3}{1} = \frac{z-1}{1}$

Correct Answer Logic:

Let the required line intersect the given line at parameter $t$, giving point $(-1-3t, 3+2t, 2-t)$. The direction vector of required line from $(-4,3,1)$ to this point is $(3-3t, 2t, 1-t)$. This must be perpendicular to plane normal $(1,2,-1)$: $(3-3t)(1) + (2t)(2) + (1-t)(-1) = 0$, giving $3-3t+4t-1+t = 0$, so $2+2t = 0$ and $t = -1$. The intersection point is $(2, 1, 3)$. Direction ratios: $(2-(-4), 1-3, 3-1) = (6, -2, 2)$, which simplifies to $(3, -1, 1)$. The line equation is $\frac{x+4}{3} = \frac{y-3}{-1} = \frac{z-1}{1}$.

Uploaded by: Fani Warraich

Maths QUESTION #2831

Question 5736

Simplify: $\dfrac{2^5 \times 4^3}{8^2 \times 2}$

4
8✔️
16
32

Correct Answer Logic:

$2^5 = 32$, $4^3 = (2^2)^3 = 2^6 = 64$, $8^2 = (2^3)^2 = 2^6 = 64$. Numerator $= 2^5 \times 2^6 = 2^{11}$. Denominator $= 2^6 \times 2^1 = 2^7$. Result $= 2^{11-7} = 2^4 = 16$.

Uploaded by: Fani Warraich

Physics QUESTION #1153

Question 5737

The zeroth law of thermodynamics helps to define the term:

Temperature✔️
Pressure
Volume
Density

Correct Answer Logic:

The zeroth law of thermodynamics states that if two systems are each in thermal equilibrium with a third system, they are in thermal equilibrium with each other. This law provides the basis for defining and measuring temperature.

Uploaded by: Fani Warraich

Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #2981

Question 5738

The 'Formulary' part of a pharmacopoeia typically contains:

History of drugs
Formulas for preparing dosage forms✔️
Names of all doctors in the country
Price lists of medicines

Correct Answer Logic:

A formulary provides specific recipes and instructions for compounding pharmaceutical preparations.

Uploaded by: Fani Warraich

Maths QUESTION #4548

Question 5739

What is $0.08$ as a percentage?

$0.08\%$
$0.8\%$
$8\%$✔️
$80\%$

Correct Answer Logic:

To convert decimal to percent, multiply by $100$. $0.08 \times 100 = 8\%$

Uploaded by: Fani Warraich

Law QUESTION #9671

Question 5740

Under Article 5, a spouse may disclose communications made during marriage in which situation?

Never under any circumstances
With the consent of the person who made the communication✔️
Only in civil proceedings
When the Court orders disclosure

Correct Answer Logic:

Article 5 states that a spouse shall not be permitted to disclose marital communications unless the person who made it, or his representative-in-interest, consents — except in suits between married persons or criminal proceedings for crimes committed against the other spouse.

Uploaded by: Fani Warraich

More Options

Suggest a Question