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MBBS QUESTION #10350

In the fed state, blood glucose regulation favors glycogen synthesis and glycolysis over gluconeogenesis and glycogenolysis, driven predominantly by rising levels of which hormone acting on liver, muscle, and adipose tissue?

Glucagon
Insulin✔️
Cortisol
Growth hormone

Correct Answer Logic:

Insulin, secreted in response to elevated blood glucose after a meal, promotes cellular glucose uptake, glycogen synthesis, and glycolysis while inhibiting gluconeogenesis, glycogenolysis, and lipolysis — the principal anabolic hormone coordinating the fed-state metabolic response.

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General Knowledge QUESTION #11546

Question 6162

Which computer peripheral functions as a 'point and draw' input device?

Mouse✔️
Scanner
Printer
CD-ROM

Correct Answer Logic:

A Mouse is a pointing device that controls the cursor on screen. Users point by moving the mouse, then click to select or activate objects. It translates physical movement into cursor movement via optical or laser sensor. Other pointing devices: trackpads, trackballs, stylus pens, and joysticks.

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Math Physics Chemistry Biology QUESTION #4322

Question 6163

Which of the following organisms eliminate nitrogenous waste mainly as uric acid?

Freshwater Fish
Amphibians
Birds✔️
Mammals

Correct Answer Logic:

Birds are uricotelic — they excrete nitrogenous waste as uric acid, which is less toxic and requires minimal water, an adaptation that reduces body weight for flight.

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Mathematics QUESTION #1293

Question 6164

If $\vec{r} = x\hat{i} + y\hat{j} + z\hat{k}$ and $r = |\vec{r}|$, then $\nabla r^n$ equals:

$nr^{n-2}$
$nr^{n-1}\vec{r}$
$nr^{n-2}\vec{r}$✔️
$nr^n\vec{r}$

Correct Answer Logic:

Using the chain rule: $\nabla r^n = n r^{n-1}\nabla r$. Since $\nabla r = \dfrac{\vec{r}}{r}$, we get $\nabla r^n = n r^{n-1}\cdot\dfrac{\vec{r}}{r} = nr^{n-2}\vec{r}$.

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MBBS QUESTION #10152

Question 6165

The alveolar wall of the lung is lined by simple squamous epithelium (type I pneumocytes). This epithelial type is functionally best suited for:

Secretion of mucus
Active absorption of nutrients
Rapid passive gas diffusion✔️
Mechanical protection against abrasion

Correct Answer Logic:

Simple squamous epithelium consists of a single layer of extremely thin, flattened cells, minimizing diffusion distance — ideal for rapid passive gas exchange across the alveolar-capillary membrane.

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MBBS QUESTION #10168

Question 6166

A patient develops hoarseness of voice and a weak cough following thyroidectomy. Which nerve was most likely injured intraoperatively?

Superior laryngeal nerve (external branch)
Recurrent laryngeal nerve✔️
Main trunk of the vagus nerve
Hypoglossal nerve

Correct Answer Logic:

The recurrent laryngeal nerve supplies all intrinsic laryngeal muscles except cricothyroid and runs close to the inferior thyroid artery and thyroid gland capsule, placing it at risk during thyroidectomy; injury causes hoarseness due to unilateral vocal cord paralysis.

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General Knowledge QUESTION #8813

Question 6167

The first spacecraft to land on the Moon (July 16, 1969) was named?

Skylab
Apollo 7
Apollo 11✔️
Sputnik 5

Correct Answer Logic:

Apollo 11 made the first crewed lunar landing.

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Physics QUESTION #4402

Question 6168

The Balmer series of hydrogen spectrum appears in the:

Infrared region
Ultraviolet region
X-ray region
Visible region✔️

Correct Answer Logic:

The Balmer series corresponds to electron transitions to the $n=2$ energy level in hydrogen. These transitions emit photons in the visible region of the electromagnetic spectrum (wavelengths $\approx 400-700\ nm$).

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Math Physics Chemistry Biology QUESTION #11296

Question 6169

Which of the following is a viral disease?

Tuberculosis
Typhoid
Influenza✔️
Tetanus

Correct Answer Logic:

Influenza is caused by the influenza virus. Tuberculosis is caused by Mycobacterium tuberculosis (bacterium), typhoid by Salmonella typhi (bacterium), and tetanus by Clostridium tetani (bacterium).

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #2996

Question 6170

Which of the following is an example of an 'Aromatic Water'?

Normal Saline
Peppermint Water✔️
Simple Syrup
Calamine Lotion

Correct Answer Logic:

Aromatic waters are saturated solutions of volatile oils or aromatic substances in water.

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Social Studies QUESTION #10061

Question 6171

The well-known book 'The Savage Mind' was authored by:

Claude Levi-Strauss✔️
Franz Boas
Bronislaw Malinowski
None of these

Correct Answer Logic:

'The Savage Mind' (1962) was written by Claude Lévi-Strauss.

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MBBS QUESTION #10377

Question 6172

A patient with prolonged vomiting develops hypochloremic, hypokalemic metabolic alkalosis. The biochemical basis for the accompanying hypokalemia in this setting includes:

Renal potassium wasting, driven partly by aldosterone-mediated compensation for volume depletion, which promotes exchange of potassium (and hydrogen ions) for sodium reabsorption in the distal nephron✔️
Direct loss of potassium in vomited gastric contents as the sole significant mechanism
Increased dietary potassium intake during illness
Decreased renal excretion of potassium in this setting

Correct Answer Logic:

Vomiting causes loss of gastric acid (H+ and Cl-) directly, but the resulting volume depletion activates the renin-angiotensin-aldosterone system; aldosterone-driven sodium reabsorption in the distal nephron is coupled to potassium and hydrogen ion secretion, compounding both the hypokalemia and the metabolic alkalosis in a self-perpetuating cycle ('paradoxical aciduria').

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MCQs Section QUESTION #4866

Question 6173

Choose the correct antonym of "GAWKY"

Neat
Handy
Graceful✔️
Handsome

Correct Answer Logic:

Gawky means nervously awkward and ungainly in movement or appearance. Its antonym is 'graceful,' meaning having elegance and beauty of movement or expression.

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Verbal Reasoning QUESTION #8173

Question 6174

The digit $k$ appears in the decimal $1.3k5$, and it is known that $1.3k5 < 1.33$. Compare:

Quantity A: $k$

Quantity B: $1$

Quantity A is greater
Quantity B is greater
The two quantities are equal
The relationship cannot be determined from the information given✔️

Correct Answer Logic:

For $1.3k5 < 1.33$, we need $1.3k5 < 1.330$.

Comparing digit by digit: $1.3k5$ vs $1.330$. The first two digits match ($1.3$). The third digit: $k$ vs $3$.

If $k < 3$: then $1.3k5 < 1.330$ regardless of subsequent digits. For example, $k=0$: $1.305 < 1.330$ ✓; $k=1$: $1.315 < 1.330$ ✓; $k=2$: $1.325 < 1.330$ ✓.

If $k = 3$: $1.335 > 1.330$. Not valid.

So $k$ can be $0, 1,$ or $2$ — all less than 3.

$k$ could be $0$ (less than 1) or $1$ (equal to 1) or $2$ (greater than 1). The relationship between $k$ and $1$ cannot be determined.

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Physics QUESTION #7855

Question 6175

Correct SI unit pair:

Energy-Newton
Force-Joule
Power-Watt✔️
Velocity-m/s²

Correct Answer Logic:

Power: watt (J/s). Energy: joule; Force: newton; Velocity: m/s.

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Chemistry QUESTION #463

Question 6176

The mobile phase in paper chromatography is usually

An organic liquid✔️
Sulphuric acid
Water
Silver nitrate

Correct Answer Logic:

Organic solvents are typically used as mobile phase

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Bio-Technology QUESTION #10572

Question 6177

A cDNA library differs from a genomic library in that it:

Contains only regulatory sequences from the genome
Is constructed from mRNA reverse-transcribed into DNA and lacks introns✔️
Represents only coding sequences from the chromosome without replication
Contains larger DNA inserts than a genomic library

Correct Answer Logic:

A cDNA library is constructed by reverse-transcribing mRNA into complementary DNA (cDNA) using reverse transcriptase. Because mRNA is already processed (spliced), cDNA lacks introns and represents only expressed genes. This is critical when cloning eukaryotic genes into prokaryotic hosts (which lack splicing machinery). A genomic library contains all DNA (exons + introns + non-coding regions).

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