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Question 2770

Cerebral Malaria is caused by:

APlasmodium vivax

BPlasmodium malariae

CPlasmodium falciparum

DNone of the above

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C. Plasmodium falciparumExplanation: Cerebral malaria is a severe neurological complication of malaria infection caused by Plasmodium falciparum. The parasite infects red blood cells, making them sticky and causing them to block small blood vessels in the brain. This leads to high fever, seizures, coma, and can be fatal if untreated. Transmission occurs through the bite of an infected female Anopheles mosquito.

Question 2765

Adult Filaria worms live in human:

ABlood

BLymphatics

CLiver

DIntestine

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B. LymphaticsExplanation: The adult filarial worm, Wuchereria bancrofti (and Brugia malayi), lives in the lymphatic vessels and lymph nodes of humans. These worms block the lymphatic system, causing a condition known as lymphatic filariasis or elephantiasis, characterized by severe swelling of legs, arms, or genitals. The disease is transmitted by the bite of infected Culex mosquitoes, which carry t

Question 2763

The disease caused due to lack of antidiuretic hormone (ADH):

ADiabetes insipidus

BDiabetes mellitus

CGrave's disease

DCushing's disease

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A. Diabetes insipidusExplanation: Antidiuretic hormone (ADH), also known as vasopressin, is secreted by the posterior pituitary gland. It regulates water balance in the body by increasing water reabsorption in the kidney tubules. When ADH is deficient or its receptors fail to respond, the kidneys excrete large volumes of dilute urine — a condition known as Diabetes insipidus. Patients experience intense thirst (polydipsia) and frequ

Question 2760

The animal group that is not found in marine water:

AMammals

BAmphibia

CReptiles

DAves

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D. AvesExplanation: Marine environments support various groups of animals including mammals (whales, seals), reptiles (sea turtles, sea snakes), and numerous invertebrates. However, birds (Aves) are air-breathing terrestrial vertebrates. While certain birds like penguins, pelicans, and seagulls feed or swim in the ocean, they do not permanently live in marine water or breathe underwater — thus, they are not considere

Question 2758

Normal human blood is:

AAcidic

BAlkaline

CNeutral

DVariable

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B. AlkalineExplanation: Normal human blood has a slightly alkaline pH of 7.35 to 7.45. This pH is maintained by buffer systems such as the bicarbonate buffer system and controlled by the lungs (CO₂ regulation) and kidneys (acid-base balance). A deviation from this range can be life-threatening — acidosis occurs if pH falls below 7.35, and alkalosis occurs if it rises above 7.45.

Question 2747

Which one of the following organs is the main respiratory organ of whale?

AInteguments

BGills

CLungs

DTrachea

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C. LungsExplanation: Whales are mammals and breathe air through their lungs. They come to the surface of the water to inhale oxygen through their blowholes located on top of their heads. Unlike fish, whales cannot extract oxygen from water because they lack gills. They periodically surface to exhale and inhale before diving again. This adaptation allows them to stay underwater for long durations while still depending on atmospheric oxyg

Question 2744

The number of milk teeth in man is

A28

B29

C20

D12

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C. 20Explanation: Humans first develop a set of 20 milk teeth (also called deciduous or primary teeth) — 10 in the upper jaw and 10 in the lower jaw. These teeth start erupting around 6 months of age and are eventually replaced by 32 permanent teeth (including 4 wisdom teeth). Milk teeth help in early chewing, speaking, and maintaining space for permanent teeth.

Question 2743

Muscle fatigue is due to accumulation of

ACarbon Dioxide

BCreatinine

CLactic acid

DEthyl alcohol

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C. Lactic acidExplanation: During vigorous physical activity, the oxygen supply to muscle tissues becomes insufficient. As a result, muscles switch from aerobic to anaerobic respiration. In this process, glucose is partially broken down into lactic acid. The accumulation of lactic acid lowers the pH of muscles, leading to pain, cramps, and temporary fatigue. Once sufficient oxygen is restored, lactic acid is converted back into carbon dioxide

Question 2741

If we add salt to pure water, its boiling point will

Aincrease

Bdecrease

Cremains same

DNone of the above

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A. increaseExplanation: When salt is added to pure water, its boiling point increases. This phenomenon is known as boiling point elevation, a colligative property. The presence of dissolved salt particles reduces the vapor pressure of water, requiring a higher temperature for it to boil.

Question 2728

The gastric gland in the stomach produce an enzyme :

AInsulin

BPtyalin

CPepsin

DTrypsin

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C. PepsinExplanation: The gastric glands in the stomach secrete gastric juice, which contains three main components — hydrochloric acid (HCl), pepsinogen, and mucus. Pepsinogen is the inactive form that is converted to pepsin by HCl. Pepsin is a powerful enzyme that digests proteins into smaller peptides in the acidic environment of the stomach.

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Science

Cerebral Malaria is caused by:

Adult Filaria worms live in human:

The disease caused due to lack of antidiuretic hormone (ADH):

The animal group that is not found in marine water:

Normal human blood is:

Which one of the following organs is the main respiratory organ of whale?

The number of milk teeth in man is

Muscle fatigue is due to accumulation of

If we add salt to pure water, its boiling point will

The gastric gland in the stomach produce an enzyme :

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