Plus 2 Lecturer Mixed Practice Test #956

Question 1

Many B vitamins function as essential coenzymes in various metabolic pathways. Which of the following B vitamins is a crucial component of coenzyme A (CoA), important for fatty acid metabolism and the Krebs cycle?

Accepted Answer

D. Pantothenic Acid (B5) — Pantothenic acid, also known as Vitamin B5, is a fundamental component of coenzyme A (CoA). CoA is an essential coenzyme involved in numerous metabolic reactions, including the synthesis and oxidation of fatty acids, and is a key molecule in the Krebs cycle for energy production.

Answer

A. Thiamine (B1)

Answer

B. Riboflavin (B2)

Answer

C. Niacin (B3)

Question 2

During a lesson, a student begins to doodle excessively and lose focus. The teacher wants to redirect the student's attention without interrupting the flow of the lesson. Which of the following non-verbal cues would be most effective?

Accepted Answer

B. Walking past the student's desk and placing a hand gently on their shoulder. — Walking past the student and using proximity control or a gentle touch on the shoulder is a highly effective non-verbal intervention that redirects attention without disrupting the entire class. Direct verbal questions interrupt the lesson, public praise is indirect, and intense eye contact can be perceived as aggressive or ineffective if the student isn't looking.

Answer

A. Stopping the lesson and asking the student directly, "Are you paying attention?"

Answer

C. Publicly praising another student for their excellent focus.

Answer

D. Making intense eye contact with the student from across the room until they look up.

Question 3

'I have been living in this house ___ the last ten years.'‌​‍

Accepted Answer

for — 'For' is used with duration (ten years).‌​‍

Answer

from

Answer

since

Answer

by

Question 4

SONAR, used to detect underwater objects, stands for:

Accepted Answer

Sound Navigation And Ranging — SONAR sends ultrasonic pulses and measures echo time to map underwater objects.

Answer

Sound Overseas Navy Response

Answer

Subsonic Ocean Navy Array

Answer

Sonic Object Ranging

Question 5

Great Barrier Reef length:‌​‍

Accepted Answer

2300 km — World's largest coral system.‌​‍

Answer

3000 km

Answer

500 km

Answer

1000 km

Question 6

The princess has a beautiful white ___ (feminine of horse).

Accepted Answer

mare — Mare is the female of horse.

Answer

bitch

Answer

horsess

Answer

vixen

Question 7

'Martin ate the ___ amount of shawarma at the party.' (superlative form of 'little')‌​‍

Accepted Answer

least — Little → less → least. Superlative = 'least'.‌​‍

Answer

less

Answer

lest

Answer

little

Question 8

'She is more cleverer than me.' Error:

Accepted Answer

more cleverer — Double comparative. Use 'cleverer' or 'more clever'.

Answer

She is

Answer

than me

Answer

No error

Question 9

Kerala's famous festival calendar:‌​‍

Accepted Answer

Kollavarsham (Malayalam Era) — Kollavarsham (Malayalam Era) — started 825 CE.‌​‍

Answer

Saka era

Answer

Vikram samvat

Answer

Hijri

Question 10

A new experimental drug is found to bind reversibly to the active site of an enzyme, preventing the substrate from binding. This inhibitory effect can be overcome by significantly increasing the concentration of the natural substrate. What type of enzyme inhibition is this drug exhibiting?

Accepted Answer

C. Competitive inhibition — This describes competitive inhibition, where the inhibitor competes with the substrate for the enzyme's active site. Increasing substrate concentration can outcompete the inhibitor. Non-competitive inhibitors bind to an allosteric site, uncompetitive inhibitors bind only to the enzyme-substrate complex, and irreversible inhibitors form a permanent bond.

Answer

A. Non-competitive inhibition

Answer

B. Uncompetitive inhibition

Answer

D. Irreversible inhibition

Plus 2 Lecturer Mixed Practice Test #956