Plus 2 Lecturer Mixed Practice Test #953

Question 1

During a febrile illness, a patient's body temperature rises to 40°C. How does this elevated temperature primarily affect the activity of most human enzymes?

Accepted Answer

B. It initially increases enzyme activity but prolonged elevation can cause denaturation. — Enzyme activity generally increases with temperature up to an optimal point, which for most human enzymes is around 37°C. A moderate increase to 40°C would initially enhance their catalytic rate. However, prolonged or excessively high temperatures (typically above 40-42°C) can cause irreversible denaturation of the enzyme's protein structure, leading to a loss of function.

Answer

A. It irreversibly denatures the enzymes, rendering them inactive.

Answer

C. It decreases enzyme activity by altering the pH of the cellular environment.

Answer

D. It has no significant effect on enzyme activity within a narrow range.

Question 2

Vulcanisation of rubber:‌​‍

Accepted Answer

Heating natural rubber with sulfur — improves strength and elasticity — Goodyear (1839). ‌​‍Sulfur cross-links polyisoprene chains. Car tyres, conveyor belts.

Answer

Heating only

Answer

Cooling

Answer

Boiling

Question 3

Who is known as the 'Political Father' of Ezhavas?

Accepted Answer

Dr. Palpu — Dr. Palpu — political voice of the Ezhava community in Travancore.

Answer

Sree Narayana Guru

Answer

Kumara Guru

Answer

Kumaranasan

Question 4

In Excel, =AVERAGE(B1:B5) calculates:‌​‍

Accepted Answer

Average — AVERAGE function calculates the arithmetic mean of the range.‌​‍

Answer

Sum

Answer

Count

Answer

Maximum

Question 5

The Noble Eightfold Path ends with:‌​‍

Accepted Answer

Right Samadhi (concentration/meditation) — Noble Eightfold Path: Right view, intention, speech, action, livelihood, effort, mindfulness, concentration. ‌​‍Divided into Wisdom (prajna), Ethics (sila), Meditation (samadhi).

Answer

Right speech

Answer

Right view

Answer

Right karma

Question 6

Which of the following biomolecules is classified as a simple carbohydrate?

Accepted Answer

C. Lactose — Lactose is a disaccharide composed of glucose and galactose, making it a simple carbohydrate. Starch and glycogen are polysaccharides, while cellulose is a structural polysaccharide that humans cannot digest. Simple carbohydrates are monosaccharides or disaccharides, and lactose fits this category.

Answer

A. Starch

Answer

B. Glycogen

Answer

D. Cellulose

Question 7

Kant's Categorical Imperative:

Accepted Answer

Act only on maxim you could will as universal law — Groundwork of Metaphysics of Morals (1785). Deontology (duty ethics). Contrast: consequentialism (Bentham, Mill — utilitarianism).

Answer

Act selfishly

Answer

Follow authority

Answer

No ethics

Question 8

The Tyndall effect is exhibited by:‌​‍

Accepted Answer

Colloids — Colloidal particles scatter light, making beam visible — Tyndall effect.‌​‍

Answer

Gases only

Answer

Pure liquids

Answer

True solutions

Question 9

Samagra Shiksha Kerala (SSK) is an integrated scheme for school education from pre-school to senior secondary levels. Which of the following is NOT a primary objective of SSK in Kerala?

Accepted Answer

C. Providing financial assistance for higher education to meritorious students. — SSK aims to ensure inclusive and equitable quality education, promote vocational education, and bridge social and gender gaps within the school education system (pre-school to senior secondary). Providing financial assistance for higher education (beyond senior secondary) falls outside the direct scope of SSK, which focuses on foundational and secondary schooling.

Answer

A. Ensuring inclusive and equitable quality education at all levels.

Answer

B. Promoting vocational education and skill development from elementary to secondary.

Answer

D. Bridging social and gender gaps in school education.

Question 10

According to Piaget's theory of cognitive development, a child who can solve conservation tasks but struggles with abstract reasoning is most likely in which stage?

Accepted Answer

C. Concrete operational — The concrete operational stage (7–11 years) is characterized by the ability to perform logical thought on concrete objects, including conservation tasks. The formal operational stage deals with abstract reasoning, which is beyond this child's capability. Sensorimotor and preoperational stages do not involve conservation tasks.

Answer

A. Sensorimotor

Answer

B. Preoperational

Answer

D. Formal operational

Plus 2 Lecturer Mixed Practice Test #953