Explanation

Phagocytosis is the process by which a cell engulfs solid particles like bacteria or debris by forming a vesicle around them.

It is commonly performed by white blood cells (phagocytes) as part of the immune defense system.

Explanation

Tollen's reagent detects aldehydes, which reduce Ag⁺ to metallic silver (silver mirror test).

CH₃CHO is an aldehyde, so it reacts with Tollen’s reagent; the others are ketones or acids, which do not.

Explanation

long double provides higher precision than double and float for storing real numbers.

It allows more digits after the decimal point, making it suitable for high-accuracy calculations.

Explanation

In an Entity-Relationship (E-R) diagram, a rectangle represents an Entity.

Attributes are shown as ellipses.

Relationships are shown as diamonds.

Explanation

A trivial solution to a system of homogeneous linear equations means all variables are zero.

So, the solution is (0, 0, 0).

Explanation

Momentous means بہت اہم یا اہم ، خاص طور پر تاریخ میں

Historic means تاریخ میں بہت اہمیت کی بات ہے

Explanation

y = mx + c

This is called the slope-intercept form, where:

 m = slope of the line

 c = y-intercept (value of y when x = 0)

It shows how y changes with x in a straight line.

Explanation

 A heifer is a young female cow that has not yet borne a calf.

So, the sentence "She was as strong as a heifer" compares her strength to that of a young cow,

Which is known for being sturdy and strong.

Explanation

 In a prokaryotic cell, the region where DNA is housed is called the nucleoid.

Unlike eukaryotic cells, prokaryotes do not have a nucleus enclosed by a membrane.

The nucleoid is a central area within the cytoplasm where the single, circular chromosome of the prokaryote resides. 

Explanation

The percentage of insect species out of all known organisms is approximately 53.1%,

While it's estimated that there are around 1.7 million known species, insects constitute over half of that number, with estimates suggesting around 900,000 species of insects.