Explanation

The overall three-dimensional structure of a polypeptide is called its tertiary structure.

These include :

hydrophobic interactions,

ionic bonding,

hydrogen bonding 

disulfide linkages.

Explanation

Kepler's law explains the motions of planets in the solar system.

Kepler's Laws of Planetary Motion

They describe how:

(1) planets move in elliptical orbits with the Sun as a focus

(2) a planet covers the same area of space in the same amount of time no matter where it is in its orbit

(3) a planet's orbital period is proportional to the size of its orbit (its semi-major axis).

Explanation

The world’s first vehicular bridges were built at Fort Bragg, North Carolina in 2009

Virtually all bridge components were made from recycled plastics.

The bridges were designed for HS25 and the 71-ton M1 Abrams tank.

Explanation

Carbon Dioxide is heavier than oxygen

so we might expect every CO2 molecule to sink below a layer of oxygen molecules.

"concept"

The Molecular weight and therefore the density (at the same temperature and pressure) of CO2 is only marginally higher than the average density of air.

Explanation

Pyridine is an important class of nitrogen-containing heterocycles found in various natural products.

Explanation

An s-orbital is spherical with the nucleus at its center,

a p-orbitals is dumbbell-shaped

and four of the five d orbitals are cloverleaf shaped.

Explanation

The average length of pregnancy is 9 months 240 days and 40 weeks.

**

concept

Pregnancy is counted from the first day of your last menstrual period.

This means an extra 2 weeks are counted at the beginning of your pregnancy when you aren't actually pregnant.

So pregnancy lasts 10 months (40 weeks)

—not 9 months—because of these extra weeks.

Explanation

Alpha decay is a form of nuclear fission in which the parent atom splits into two daughter products

 Alpha particles (a) are composite particles consisting of two protons and two neutrons tightly bound together

Explanation

The Battle of Saragarhi was fought on 12 September 1897.

The Battle of Saragarhi was fought between the British Punjabi Soldiers and  Afghan tribesmen

The Battle of Saragarhi was a last-stand battle fought before the Tirah Campaign 

On 12 September 1897, an estimated 12,000 – 24,000 Orakzai and Afridi tribesmen were seen near Gogra, at Samana Suk

Explanation

Cold Start is a military doctrine that was developed by the Indian Armed Forces for use in a possible war with Pakistan.

The doctrine is intended to allow India's conventional forces to perform holding attacks to prevent a nuclear retaliation from Pakistan in case of a conflict.

ND6-08-2023