Daily NEET MCQ- July 14, 2022 - NEET MCQ

Agonists are drugs that replicate the behaviour and properties of the chemical messenger and activate the receptor. These are used when the actual messenger is not present in the body.

There are lots of different types of receptors in the body at different locations. They interact with different kinds of chemical messengers. Their selectivity for one messenger over the other is because of the difference in their binding sites, structure and composition of amino acids.

Receptors are proteins that are embedded in the cell membrane with the binding site protruding outwards. They change the shape of the binding site to accommodate the incoming messenger and facilitate communication.

The C.G.S. unit of charge is Stat Coulomb or ESU but in the SI system the unit is Coulomb. EMU is another unit of charge in the SI system. Pascal is the unit of pressure.

Force between two charges is inversely proportional to the relative permittivity of the medium between them. A dielectric slab has relative permittivity more than that of air. So the force between the charges decreases. No current or heating will be noticed.

If the radius of the balloon is 2 times the initial value, the surface area of the balloon will be 4 times the initial value because of surface area=4π(radius)². But in this case, flux coming out from the balloon is dependent only upon the charge inside the balloon, not on the area of the surface. As charge enclosed in the balloon is the same in both the cases, the flux will also be the same.

The increase in temperature of Earth due to an increase in the level of greenhouse gases is known as global warming. This leads to various changes in the environment. This can be controlled by planting trees and afforestation.

The phenomenon occurring due to an increase in the level of greenhouse gases is known as global warming. This leads to an increase in Earth’s temperature and leading to deleterious changes in the environment. This can be controlled by reducing the use of fossil fuels.

Global warming is the phenomenon occurring due to an increase in the level of greenhouse gases. This leads to considerable heating and an increase in temperature of Earth leading to deleterious changes in the environment. This causes odd climatic changes.

The gases that lead to the heating of Earth’s surface and atmosphere due to the radiation from a planet’s atmosphere are known as greenhouse gases. They are responsible for the greenhouse effect. Some gases such as carbon dioxide, methane, nitrous oxide, etc.