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Lucifer ? Morningstar? 5 years, 2 months ago
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Rajanya Gupte 5 years, 2 months ago
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Pavi Pandey 5 years, 2 months ago
Pavi Pandey 5 years, 2 months ago
Posted by Baldev Arya 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
(c) At 100ºC
- At 100°C, water exists in a Gaseous state.
- We know that the boiling point of water is 100°C.
- The water starts to evaporate after attaining this high temperature.
- Example: When you boil water at your home after some time you observe the vapours coming out of the vessel. These vapours are the gaseous state of water.
Gaurav Seth 5 years, 2 months ago
0ºC
- At 0°C, water exists in solid-state.
- We know that the freezing point of water is 0 °C.
- The liquid form of water starts to become solid (ice) at this temperature.
- Example: If you keep an ice cube tray filled with water and freeze it for a few hours, you may observe the cubes where you poured water has become solid. Ice is the solid-state of water.
Gaurav Seth 5 years, 2 months ago
25 º C
- Water at 25°C is present in the liquid state.
- The water which we use for our day to day activities is in the liquid state.
- The water which we use for drinking, cooking, washing, etc all are in a liquid state.
Posted by Alan Paul 5 years, 2 months ago
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Vani Tiwari 5 years, 2 months ago
Posted by Vani Tiwari 5 years, 2 months ago
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Rahil Uppal 5 years, 2 months ago
Posted by Vani Tiwari 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
Nucleolus: - A small body in the nucleus of a cell that contains protein and RNA and is the site for the synthesis of ribosomal RNA and for the formation of ribosomal subunits
Rahil Uppal 5 years, 2 months ago
Posted by Vani Tiwari 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
- The cells of plants, fungi and bacteria are surrounded by the cell wall.
- The cell walls of fungi, plants, and bacteria allow them to take up water via osmosis when they are placed in hypotonic media or a medium that is more dilute than their internal environments.
- The presence of cell walls outside the cell membrane allows these cells to tolerate high internal pressures.
- Hence, when these cells are placed in hypotonic solutions they swell up but do not burst.
Posted by Vani Tiwari 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
The outside solution is less concentrated than inside the cell. Thus water molecules move inside the cell from outside. A solution whose concentration is more than the cell sap or that inside a cell.
Posted by Vani Tiwari 5 years, 2 months ago
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Meghna Thapar 5 years, 2 months ago
Isotonic solutions contain equal concentrations of impermeable solutes on either side of the membrane and so the cell neither swells nor shrinks. These fluids remain within the extracellular compartment and are distributed between intravascular (blood vessels) and interstitial (tissue) spaces, increasing intravascular volume. They are used primarily to treat fluid volume deficit.
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Vani Tiwari 5 years, 2 months ago
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Lucifer?? Morningstar?? 5 years, 2 months ago
Lucifer?? Morningstar?? 5 years, 2 months ago
Posted by Jeevitha R 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
In a moving bus, a passenger moves with the bus due to inertia of motion. As the driver applies brakes, the bus comes to rest. But, the passenger tries to maintain to inertia of motion. As a result, a forward force is exerted on him.
Similarly, the passenger tends to fall backwards when the bus accelerates from rest because when the bus accelerates, the inertia of rest of the passenger tends to oppose the forward motion of the bus. Hence, the passenger tends to fall backwards when the bus accelerates forward.
Posted by Tanisha Dahiya 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
- Global warming is a phenomenon in which the average temperature of the earth increases due to the accumulation of greenhouse gases
- Greenhouse gases are produced by the burning of fossil fuels in factories, in vehicles run by petrol or diesel car and by burning of crops
- Carbon dioxide is the most harmful greenhouse gas that is resulting in the warming of our planet gradually
- Impact of global warming results in the melting of ice caps and affecting water cycle on oceans which is basically harming the balance of our natural cycle
- Global warming in the future will lead to a decrease in oxygen content in oceans which can ultimately affect the aquatic life in our water bodies
- Proper policies should be formulated to reduce the carbon footprint of countries
- It is said that by the year 2030, the average temperature of the earth will increase by 2.5 degree Celsius
- The impact of global warming on oceans is witnessed through floods, storms, cyclones, hurricanes and other such unpredictable natural calamities
- The poisoning of the food we eat, the air we breathe and the water we drink is the result of man’s greed for economic growth at the cost of nature
- More than half of earth is covered by water and if the water bodies are slightly disturbed from its natural balance, then scientists predict that floods and tsunamis on a large scale can eliminate human civilization forever
Posted by Parth Gupta 5 years, 2 months ago
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Vani Tiwari 5 years, 2 months ago
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Astha Bhagat 5 years, 2 months ago
Akshat Holland Minettee 5 years, 2 months ago
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Posted by Vani Tiwari 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
Diffusion involves the movement of substances from a region of higher concentration to a region of lower concentration. Diffusion is an important process for living things as it helps in moving substances in and out of cells.
Posted by Vani Tiwari 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
Cells are capable of performing multiple functions in an organism. A cell contains specific components which are called Organelles. Each organelle in the cell can perform different functions such as making new cells or clearing the waste of the cell. Thus, organelles allow a cell to perform several kinds of activities in an organism.
Posted by Vani Tiwari 5 years, 2 months ago
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Vikalp Verma 5 years, 2 months ago
Yogita Ingle 5 years, 2 months ago
A cell has the capability to divide itself into cells of its own type. Therefore, more cells can generate from an already existing cell.
Posted by Vani Tiwari 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
Phospholipids are the class of lipids that are a major component of all cell membranes. Phospholipids consist of a hydrophilic (or 'water loving') head and a hydrophobic (or 'water fearing') tail.
Shweta Rathore 5 years, 2 months ago
Posted by Shreya Bhandari 5 years, 2 months ago
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Meghna Thapar 4 years, 10 months ago
The kinetic theory describes a gas as a large number of submicroscopic particles (atoms or molecules), all of which are in constant rapid motion that has randomness arising from their many collisions with each other and with the walls of the container.
Diffusion refers to the process of particles moving from an area of high concentration to one of low concentration. The rate of this movement is a function of temperature, viscosity of the medium, and the size (mass) of the particles. Diffusion results in the gradual mixing of materials, and eventually, it forms a homogeneous mixture.
Not only do gaseous particles move with high kinetic energy, but their small size enables them to move through small openings as well; this process is known as effusion. For effusion to occur, the hole’s diameter must be smaller than the molecules’ mean free path (the average distance that a gas particle travels between successive collisions with other gas particles). The opening of the hole must be smaller than the mean free path because otherwise, the gas could move back and forth through the hole.
Effusion is explained by the continuous random motion of particles; over time, this random motion guarantees that some particles will eventually pass through the hole.
Posted by Aryan Kushwah 5 years, 2 months ago
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Vani Tiwari 5 years, 2 months ago
Madhav Grover 5 years, 2 months ago
Posted by Meghali Mandal 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
Xylem parenchyma
Xylem is a complex permanent tissue. It is composed of xylem tracheids, vessels, fibres, and parenchyma. Xylem parenchyma helps in sideways conduction. Xylem vessels and tracheids are responsible for vertical conduction of water.
Posted by Pankaj Singh 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
The severity of the disease manifestations depends on the number of microbes present in the body. Smaller is the number of microbes in the body, lesser are the symptoms of a disease. On the contrary, if microbe exists in large number in the body, disease can be severe and life-risking.
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Rajanya Gupte 5 years, 2 months ago
2Thank You