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Both myoglobin and hemoglobin are iron-containing heme proteins. Myoglobin is an oxygen-storing protein found in muscle tissue containing a single heme group with Fe$^{2+}$. Hemoglobin is the oxygen-carrying protein in red blood cells with four heme groups, each containing Fe$^{2+}$ (oxy) or Fe$^{3+}$ (met-form). Both contain iron in their porphyrin (heme) rings.

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Basic Mathematics QUESTION #2844

Question 1106

A train travels 360 km in 4 hours. What is its speed in km/h?

80 km/h
90 km/h✔️
100 km/h
120 km/h

Correct Answer Logic:

Speed $= \dfrac{\text{Distance}}{\text{Time}} = \dfrac{360}{4} = 90$ km/h.

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Mathematics QUESTION #4137

Question 1107

What is the area enclosed between the curves $y = x^2$ and $x = 6y - 1$ (i.e., $y = \frac{x+1}{6}$)?

$\frac{1}{3}$
$\frac{4}{3}$
$\frac{32}{3}$✔️
$\frac{16}{3}$

Correct Answer Logic:

Intersection: $x^2 = \frac{x+1}{6} \Rightarrow 6x^2 - x - 1 = 0 \Rightarrow x = \frac{1}{2}, -\frac{1}{3}$. Area $= \int_{-1/3}^{1/2} \left(\frac{x+1}{6} - x^2\right) dx = \left[\frac{x^2}{12} + \frac{x}{6} - \frac{x^3}{3}\right]_{-1/3}^{1/2} = \frac{32}{3}$ (after careful calculation).

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Biology Zoology Botany QUESTION #1358

Question 1108

In dicot plants, the first leaf-like structure that emerges from the seed is called:

Hypocotyl
Cotyledon✔️
Epicotyl
Radicle

Correct Answer Logic:

Cotyledons are the seed leaves (embryonic leaves) present inside the seed. In dicots there are two cotyledons. They are the first leaf-like structures to emerge from a germinating seed and often serve as the primary source of nutrition for the seedling. The hypocotyl is the stem below cotyledons; epicotyl is above; radicle becomes the root.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3347

Question 1109

'Lyophilization' is a process used for:

Killing microbes with heat
Freeze-drying to preserve microbial cultures✔️
Staining slides
Testing water

Correct Answer Logic:

Water is removed under vacuum while the sample is frozen, allowing for long-term storage.

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Basic Mathematics QUESTION #4550

Question 1110

What is $30\%$ of $200$?

$30$
$60$✔️
$600$
$230$

Correct Answer Logic:

$30\%$ of $200 = \frac{30}{100} \times 200 = 0.3 \times 200 = 60$

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Administration QUESTION #2940

Question 1111

What does the "Current Ratio" specifically measure regarding a company's financial health?

Long-term profitability and return on investment
A firm's ability to cover short-term liabilities with short-term assets✔️
The total market value of the company's outstanding shares
None of these

Correct Answer Logic:

The current ratio is a liquidity metric that shows if a company has enough current assets to pay off its debts due within one year.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3032

Question 1112

'Effervescent Granules' release which gas when added to water?

Oxygen
Nitrogen
Carbon Dioxide✔️
Hydrogen

Correct Answer Logic:

Effervescent granules contain acids and carbonates that react in water to release $CO_2$.

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General Knowledge QUESTION #270

Question 1113

The Headquarters of African Union is situated in:

Ethiopia✔️
Niger
Nigeria
None of these

Correct Answer Logic:

The AU is headquartered in Addis Ababa, Ethiopia.

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Chemistry QUESTION #1420

Question 1114

In an electrolytic cell:

Electrons move from cathode to anode
The anode is negative
Energy is consumed to drive the reaction✔️
None of these

Correct Answer Logic:

In an electrolytic cell, electrical energy is supplied from an external source to drive a non-spontaneous chemical reaction (electrolysis). The anode is positive (oxidation occurs) and cathode is negative (reduction occurs) — the opposite of a galvanic cell. Electrons flow from the external power source into the cathode. Energy is consumed, not produced.

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Biology Zoology Botany QUESTION #1355

Question 1115

Which element is an essential micronutrient for nitrogen fixation in legumes?

Calcium
Manganese
Molybdenum✔️
Magnesium

Correct Answer Logic:

Molybdenum (Mo) is an essential micronutrient required for nitrogen fixation. It is a component of the nitrogenase enzyme complex (specifically the FeMo-cofactor of the MoFe protein) in nitrogen-fixing bacteria such as Rhizobium found in legume root nodules. Without Mo, nitrogenase cannot reduce atmospheric N$_2$ to ammonia.

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Biology QUESTION #4216

Question 1116

Which organelle serves as a packaging and a distribution center for molecules within the cells?

Golgi apparatus✔️
Mitochondria
Ribosome
Vacuole

Correct Answer Logic:

Golgi apparatus packages and distributes molecules.

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Reading and Writing (Module-1) QUESTION #5438

Question 1117

Many of Shakespeare's tragedies appeal to today's audiences.?Romeo and Juliet?tackles universal themes. But understanding his history plays requires knowledge of English history. Consequently, ____

many theatergoers today find history plays less engaging than tragedies.✔️
some tragedies are more relevant than 20th-century plays.
Romeo and Juliet?is the most thematically accessible tragedy.
experts in English history prefer history plays to other works.

Correct Answer Logic:

The contrast implies history plays are less accessible/engaging for modern audiences.

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General Science and Ability QUESTION #189

Question 1118

Perinatal transmission is said to occur when a pathogen is transmitted from:

Non-human to human
Infected to uninfected
Mother to infant✔️
None of these

Correct Answer Logic:

Perinatal refers to the period immediately before and after birth.

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Mathematics QUESTION #4112

Question 1119

In $\mathbb{Z}_{18}$, what is the order of the cyclic subgroup generated by element $6$?

$2$
$3$✔️
$6$
$9$

Correct Answer Logic:

Order of $\langle 6 \rangle = \frac{18}{\gcd(6,18)} = \frac{18}{6} = 3$.

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CISA QUESTION #1789

Question 1120

Which document is best suited to formally define the relationship between an independent auditor and the engaging organization, and to record the mutually agreed-upon terms?

Audit charter
Annual audit plan
Engagement letter✔️
Auditor's report

Correct Answer Logic:

The engagement letter is used specifically with independent auditors to document the agreed-upon terms of the audit relationship. It records the mutual understanding between the audit committee and the independent auditor, and formally establishes the auditor's responsibility, accountability, and authority to conduct the engagement.

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