PPSC Past Papers Punjab Enforcement and Regulatory Authory Archives - Page 3 of 10

What is the primary cause of deforestation?

A. Climate change

B. Urbanization and agriculture

C. Natural disasters

D. Wildlife activities

Correct answer is: B. Urbanization and agriculture

Expansion of agriculture and urban settlements is the main cause of deforestation.

Who discovered that malaria is transmitted by mosquitoes?

A. Louis Pasteur

B. Robert Koch

C. Sir Ronald Ross

D. Edward Jenner

Correct answer is: C. Sir Ronald Ross

Sir Ronald Ross discovered that malaria is transmitted by the female Anopheles mosquito in 1897.

Which organelle is responsible for protein synthesis in a cell?

A. Mitochondria

B. Ribosome

C. Golgi apparatus

D. Lysosome

Correct answer is: B. Ribosome

Ribosomes are the cellular structures that synthesize proteins by translating mRNA.

What is the approximate blood circulation rate in human capillaries in mm/sec?

A. 0.1 mm/sec

B. 1 mm/sec

C. 10 mm/sec

D. 100 mm/sec

Correct answer is: B. 1 mm/sec

Blood flows slowly in capillaries at about 1 mm/sec to allow nutrient and gas exchange.

Malaria is spread through:

A. Bacteria

B. Virus

C. Plasmodium

D. Anopheles

Correct answer is: C. Plasmodium

Malaria is caused by Plasmodium species, which are transmitted to humans through Anopheles mosquito bites.

Which is a key gland that plays a crucial role in digestion by producing enzymes that break down carbohydrates, proteins, and fats, and also secretes bicarbonate to neutralize stomach acid?

A. Pancreas

B. Gallbladder

C. Thyroid

D. Liver

Correct answer is: A. Pancreas

The pancreas produces digestive enzymes and bicarbonate, aiding in digestion and neutralizing stomach acid.

What is the function of the IF function in Excel?

A. To perform a logical test and return a value based on the result

B. To add up a range of cells

C. To find the average of a range of cells

D. To count the number of cells in a range

Correct answer is: A. To perform a logical test and return a value based on the result

The IF function checks a condition and returns one value if TRUE and another if FALSE.

In PowerPoint, Themes could be found under:

A. Home tab

B. Design tab

C. Insert tab

D. View tab

Correct answer is: B. Design tab

Themes in PowerPoint are available under the Design tab to quickly format presentations.

From which tab can headers and footers be inserted in MS Word?

A. Home

B. Insert

C. Layout

D. View

Correct answer is: B. Insert

Headers and footers in Word are added via the Insert tab.

By default, how many worksheets are there in a new Microsoft Excel workbook?

A. 1

B. 3

C. 5

D. 10

Correct answer is: A. 1

Excel 2013 and later versions default to 1 worksheet in a new workbook for simplicity.