Plus 2 Lecturer Mixed Practice Test #84

Question 1

Tropane alkaloids, such as atropine and hyoscyamine, are characterized by a specific nitrogenous base structure. From which amino acid are these alkaloids primarily biosynthesized?

Accepted Answer

C. Ornithine — Tropane alkaloids, including atropine and hyoscyamine, are biosynthesized primarily from the amino acid Ornithine. Tryptophan is a precursor for indole alkaloids, tyrosine for isoquinoline alkaloids, and lysine for quinolizidine alkaloids.

Answer

A. Tryptophan

Answer

B. Tyrosine

Answer

D. Lysine

Question 2

Which of the following organs is responsible for the production of hydrochloric acid and the enzyme pepsin, crucial for the initial breakdown of proteins?

Accepted Answer

D. Stomach — The stomach secretes hydrochloric acid, which denatures proteins and activates pepsinogen into pepsin. Pepsin is the primary enzyme for protein digestion in the stomach. The small intestine is the main site for nutrient absorption. The pancreas produces digestive enzymes released into the small intestine. The liver produces bile but not pepsin or HCl.

Answer

A. Small intestine

Answer

B. Pancreas

Answer

C. Liver

Question 3

Newton's First Law of Motion is also called the law of:‌​‍

Accepted Answer

Inertia — Newton's First Law is the Law of Inertia — a body at rest stays at rest, and a body in motion stays in motion, unless acted upon by an external force.‌​‍

Answer

Action-Reaction

Answer

Gravity

Answer

Acceleration

Question 4

Vitamins absorbed:

Accepted Answer

Small intestine — Small intestine primarily.

Answer

Stomach

Answer

Mouth

Answer

Colon

Question 5

The word 'Communication' is derived from which language?‌​‍

Accepted Answer

Latin — From Latin 'communicare' meaning 'to share'.‌​‍

Answer

English

Answer

Arabic

Answer

Persian

Question 6

HTTP status code 500 means:

Accepted Answer

Internal Server Error — 5xx errors indicate server-side problems; 500 = generic internal server error.

Answer

Success

Answer

Not Found

Answer

Forbidden

Question 7

The Nobel Prize in Literature 2022 was awarded to:

Accepted Answer

Annie Ernaux — French writer Annie Ernaux won the 2022 Literature Nobel for autobiographical writing.

Answer

Bob Dylan

Answer

Kazuo Ishiguro

Answer

Peter Handke

Question 8

Mirage is caused by:‌​‍

Accepted Answer

Refraction and total internal reflection of light in air layers of different densities — Hot air near the ground has lower density; light bends and undergoes TIR creating the illusion.‌​‍

Answer

Dispersion

Answer

Reflection from the ground

Answer

Diffraction

Question 9

Electromagnetic induction — the generation of EMF when flux changes — was discovered by:‌​‍

Accepted Answer

Faraday — Michael Faraday (1831) demonstrated electromagnetic induction.‌​‍

Answer

Oersted

Answer

Maxwell

Answer

Ampere

Question 10

TRAI HQ:

Accepted Answer

Delhi — New Delhi.

Answer

Mumbai

Answer

Bangalore

Answer

Hyderabad

Plus 2 Lecturer Mixed Practice Test #84