Explanation

Phospholipids form the fundamental bilayer structure of biological membranes, providing a barrier and matrix for proteins.

They have hydrophilic heads and hydrophobic tails, allowing them to spontaneously arrange into stable membranes in aqueous environments.

Explanation

GPS is an abbreviation of the Global Positioning System

Itis a satellite-based radio navigation system

Owned by the United States government 

First launch: February 22, 1978

Explanation

The entity specifically trained and responsible for discarding explosive material is the Bomb Disposal Squad

It is also known as Explosive Ordnance Disposal (EOD) units.

Explanation

Modern technological "sniffers" trained detection dogs are still considered the most effective and versatile method for detecting explosives or gunpowder.

Dogs offer a unique combination of olfactory sensitivity, mobility, and adaptability to various environments and evolving threats. 

Explanation

Signal jammers block or interfere with radio frequencies to stop communication.

They are used for security or preventing unauthorized transmissions.

Explanation

Perseverance landed on Feb. 18, 2021.

 is a car-sized Mars rover designed to explore the Jezero crater on Mars as part of NASA's Mars 2020 mission.

It was manufactured by the Jet Propulsion Laboratory and launched on July 30, 2020

As of 23 July 2023, Perseverance has been active on Mars for 861 sols.

Explanation

Many handheld metal detectors commonly use 9V batteries, and their operating voltage often falls within the 6V-9V range.

Some sources might mention a lower range like 3-5V for simpler detectors, while others specify a slightly higher range like 7-9V. 

Explanation

 Alexander Graham Bell is credited with inventing the first practical metal detector

He developed it in 1881

Explanation

A suicide jacket, also known as an explosive vest or suicide vest, is a garment worn by attackers that is rigged with explosives and a detonation mechanism intended for use in suicide bombings.

Explanation

Handheld metal detectors commonly use batteries ranging from 1.5V (AA) up to 9V.

This low voltage powers the device for portability and safety.