LGS Mixed Practice Test #568

Question 1

The liver plays a vital role in detoxifying ammonia, a toxic byproduct of protein metabolism, by converting it into a less toxic substance for excretion. This substance is:

Accepted Answer

B. Urea — The liver is the primary site for the urea cycle, which converts highly toxic ammonia, produced from amino acid deamination, into less toxic urea. Urea is then transported to the kidneys for excretion in urine. Glucose is a carbohydrate, bilirubin is a heme breakdown product, and ketone bodies are produced during fat metabolism.

Answer

A. Glucose

Answer

C. Bilirubin

Answer

D. Ketone bodies

Question 2

Study of eye:‌​‍

Accepted Answer

Ophthalmology — Ophthalmology.‌​‍

Answer

Otology

Answer

Dermatology

Answer

Cardiology

Question 3

The 17 Sustainable Development Goals (SDGs) were adopted by the UN in:‌​‍

Accepted Answer

2015 — UN adopted the 2030 Agenda with 17 SDGs in September 2015.‌​‍

Answer

2010

Answer

2020

Answer

2000

Question 4

The plant hormone that promotes fruit ripening is:‌​‍

Accepted Answer

Ethylene — Ethylene is a gaseous plant hormone that triggers ripening.‌​‍

Answer

Cytokinin

Answer

Gibberellin

Answer

Auxin

Question 5

A transformer is a device used to:

Accepted Answer

Step up or step down AC voltage — Transformers work on mutual induction; cannot work on DC.

Answer

Convert AC to DC

Answer

Generate electricity

Answer

Store charge

Question 6

Kolathiri (Kannur area):‌​‍

Accepted Answer

Kolathiri dynasty — North Malabar.‌​‍

Answer

Other

Answer

Venad

Answer

Perumpadappu

Question 7

A family member calls for emergency medical help, stating their elderly relative suddenly developed weakness on one side of their body, slurred speech, and difficulty understanding what is being said. As a first responder, what immediate action should be prioritized while waiting for advanced medical help?

Accepted Answer

C. Position the person comfortably, ensure airway is clear, and monitor vital signs — The symptoms described are indicative of a stroke, a medical emergency. The priority in first aid is to ensure the person's safety, maintain a clear airway, monitor vital signs, and await professional medical help without administering medications or attempting to walk. Offering water or aspirin could be harmful depending on the stroke type and level of consciousness.

Answer

A. Offer the person some water to drink to prevent dehydration

Answer

B. Administer aspirin to thin the blood and improve circulation

Answer

D. Encourage the person to try and walk to assess mobility

Question 8

Kerala's first Film Censor Board chair Malayalam:

Accepted Answer

Adoor — Various over years — Adoor chaired FTII.

Answer

M.T. Vasudevan Nair

Answer

Shahji

Answer

None

Question 9

State animal of Kerala:‌​‍

Accepted Answer

Indian Elephant — Indian Elephant.‌​‍

Answer

Tiger

Answer

Nilgiri Tahr

Answer

Lion

Question 10

Adolescent risk-taking behavior, such as experimenting with substances or reckless driving, is often attributed to a developmental mismatch in the brain. Which of the following best describes this mismatch?

Accepted Answer

B. Rapid development of the limbic system (reward center) preceding the full maturation of the prefrontal cortex (judgment center). — The limbic system, responsible for emotions and reward processing, develops rapidly during adolescence, leading to increased sensation-seeking. However, the prefrontal cortex, crucial for judgment, impulse control, and long-term planning, matures later, creating a temporary imbalance that can contribute to risk-taking behaviors. The prefrontal cortex is not fully developed, and the cerebellum and brainstem play different roles.

Answer

A. Fully developed prefrontal cortex but underdeveloped limbic system.

Answer

C. Complete maturation of the cerebellum leading to impulsive actions.

Answer

D. Underdevelopment of the brainstem affecting emotional regulation.

LGS Mixed Practice Test #568