Science Quiz: Day 29

December 5, 2022

Excess of amino acids is broken down to form urea in:

(A) Kidney
(B) Liver
(C) Spleen
(D) Rectum

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Answer – B

Excretion:

1.The process by which the waste products that are harmful to the body are removed from the body is known as excretion.

2.The excretory products are mainly nitrogenous wastes.

3.The nitrogenous wastes are mostly the waste products from metabolic reactions – anabolism and catabolism.

4.In the liver, deamination or breakdown of excess amino acids produces urea.

Which of the following teeth of child (3-4 Years) is not a part of the milk

(A) Incisors
(B) Canines
(C) Molars
(D) Premolars

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Answer – C

Which of the following pigment causes eye colour of person (brown eyes, blue eyes or black eyes) ?

(A) Cornea
(B) Choroid
(C) Iris
(D) Vitreous body

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Answer – C

What part of the Quinine plant is commonly used drug for Malaria?

(A) Leaves
(B) Fruits
(C) Root
(D) Stem bark

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Answer – D

In 1820, quinine was extracted from the bark, isolated and named by Pierre Joseph Pelletier and Joseph Caventou. Purified quinine then replaced the bark as the standard treatment for malaria

Which of the following disease occur when the replacement of breast feeding by less nutritive food, low in proteins and calories, infants below the age of one year ?

(A) Kwashiorkor
(B) Marasmus
(C) Rickets
(D) Pellagra

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Answer – B

What happen when the exposure to carbon monoxide (from coal gas) is extremely dangerous and can kill a patient?

(A) The compound carboxy-haemoglobin (COHb) it forms with haemoglobin can gradually clot the blood resulting in circulatory failure.
(B) COHb reduces the ability of blood to transport oxygen by rupturing a vast majority of erythrocytes.
(C) COHb is stable compound and thus deprives blood of its ability to transport oxygen.
(D) COHb greatly modifies the structure of haemoglobin thus making it lose its affinity for oxygen.

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Answer – C

Which of the following statement is related with the 'Sulphur shower'?

(A) Discharge of large quantities of Crocus (yellow kesar) pollen grains into the air.
(B) Discharge of large quantities of pinus pollen grains into the air forming yellowish clouds.
(C) Release of a large amount of sulphur particles into the air from factories processing sulphur.
(D) Release of a large amount of sulphur particles into the air near sulphur mines.

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Answer – B

In the given item consist of two statements, one labelled as 'Assertion (A)' and the other labelled as 'Reason (R)'.
Assertion (A): Saturated fats are more reactive as compared to unsaturated fats.
Reason (R): Molecules of unsaturated fats have double bonds.
Select your answers to these items using the codes given below.Codes:

(A) Both A and R are true and R is the correct explanation of A
(B) Both A and R are true but R is not a correct explanation of A
(C) A is true but R is false
(D) A is false but R is true

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Answer – D

Which of the following gland controls the blood pressure?

(A) Thalamus gland
(B) Adrenal gland
(C) Thyroid gland
(D) Pancreas gland

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Answer – B

In which organ of the human body are the lymphocyte cells formed?

(A) Liver
(B) Bone Marrow
(C) Pancreas
(D) Spleen

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Answer – B

Which of the following is one of the functions of antigen?

(A) Lowers body temperature
(B) Destroys harmful bacteria
(C) Triggers the immune system
(D) Used as an antidote to poison

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Answer – C

Which of the following process that does not involve evolution of CO2?

(A) Combustion
(B) Respiration
(C) Fermentation
(D) Photosynthesis

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Answer – D

Arrange the correct sequence of the steps involved in the process of Human Digestive System?

(A) Digestion, Ingestion, Assimilation, Egestion and Absorption
(B) Ingestion, Digestion, Absorption, Assimilation and Egestion
(C) Egestion, Absorption, Digestion, Assimilation and Ingestion
(D) Assimilation, Absorption, Ingestion, Digestion and Egestion

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Answer – B

What is the Function of Hydrochloric Acid?
(i) It makes pepsin enzyme effective.
(ii) It kills bacteria which may enter in stomach with food.
Which of the following statements is/are correct?

(A) Only (i)
(B) Only (ii)
(C) Both (i) and (ii)
(D) Neither (i) nor (ii)

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Answer – C

Complete digestion of food occurs in:

(A) Stomach
(B) Small Intestine
(C) Pancreas
(D) Large Intestine

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Answer – B