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Ask QuestionPosted by Tarini Sahu 4 years, 2 months ago
- 2 answers
Gaurav Seth 4 years, 2 months ago
There is a division of labour in multicellular organisms such as human beings. This means that different parts of the body performs different functions. For eg. the human body has heart to pump the blood a stomach to digest and so on. Similarly the division of labour is also seen with a single cell. Each such cell has got certain specific components within it known as cell organelles. These organelles perform specific function for the cell.
Posted by Deepanshu Varshney 4 years, 2 months ago
- 4 answers
Akshat Holland Minettee 4 years, 2 months ago
Vallabh Pawar 4 years, 2 months ago
Yogita Ingle 4 years, 2 months ago
The spreading of fragrance of incense stick from a corner to the whole room indicates that particles of matter keep moving from higher to lower concentration.
Posted by Megha Sharma 4 years, 2 months ago
- 2 answers
Yogita Ingle 4 years, 2 months ago
Protoplasm is defined as the organic and inorganic substances that constitute the living the nucleus, cytoplasm, plastids and mitochondria of the cell.
Protoplasm is the living part of the cell, which comprises of different cellular organelles. It is a jelly-like, colourless, transparent and viscous living substances present within the cell wall. The term protoplasm was proposed in the year 1835 and is known as the primary substance, as it is responsible for various living processes.
Posted by Payal Pal 4 years, 2 months ago
- 2 answers
Yogita Ingle 4 years, 2 months ago
Cells have particular structures that perform specific jobs. These cell structures are called organelles and perform the actual work of the cell. These organelles are formed from many different molecules. Some functions carried out by organelles include the transport of materials, energy capture and release, protein building
Gaurav Seth 4 years, 2 months ago
CELL is the structural and functional unit of living organisms made up of protoplasm containing nucleus surrounded by cytoplasm and bounded by cell membrane.
*cell made up of protein , water ,lipid and carbohydrate.
STRUCTURAL ORGANISATION OF CELL
CELL consist of following structures
cell membrane
cell wall
cytoplasm
nucleus
endoplasmic reticulum
Golgi complex
mitochondria
Posted by Anshara Tazeen Anshara Tazeen 4 years, 2 months ago
- 1 answers
Yogita Ingle 4 years, 2 months ago
Protoplasm is the living contents of a cell that is surrounded by a plasma membrane. It is a general term for the cytoplasm.Protoplasm is composed of a mixture of small molecules such asions, amino acids, monosaccharides and water, and macromolecules such as nucleic acids, proteins, lipids and polysaccharides.
Posted by Free Fire Gamer 4 years, 2 months ago
- 1 answers
Yogita Ingle 4 years, 2 months ago
Hermaphrodites are those organisms in which the sexes are not separate i.e. both male and female reproductive organs occur in the same individual.
Example: Animals of phylum Platyhelminthes, such as liver fluke and blood fluke, are hermaphrodites.
Posted by Harsh Vardhan 4 years, 2 months ago
- 2 answers
Saumya Gupta 4 years, 2 months ago
Meghna Thapar 4 years, 2 months ago
"The ocean looks blue because red, orange and yellow (long wavelength light) are absorbed more strongly by water than is blue (short wavelength light). So when white light from the sun enters the ocean, it is mostly the blue that gets returned. The water is in fact not colorless; even pure water is not colorless, but has a slight blue tint to it, best seen when looking through a long column of water. The absorption of light in water is due to the way the atoms vibrate and absorb different wavelengths of light.
Posted by Harsh Vardhan 4 years, 2 months ago
- 1 answers
Meghna Thapar 4 years, 2 months ago
The blue color of the sky is a result of this scattering process. At night, when that part of Earth is facing away from the Sun, space looks black because there is no nearby bright source of light, like the Sun, to be scattered. ... Every direction you looked in space you would be looking at a star. Sunlight reaches Earth's atmosphere and is scattered in all directions by all the gases and particles in the air. Blue light is scattered more than the other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.
Posted by Muskaan Mishra 4 years, 2 months ago
- 2 answers
Prachi Priya 4 years, 2 months ago
Meghna Thapar 4 years, 2 months ago
Inertia is an object's ability to resist changes in motion. Examples of Inertia: A person is pedalling their bike and suddenly hits the front brakes and their body continues to move and they fly over the handlebars "Inertia is the resistance of any physical object to any change in its state of motion (including a change in direction). In other words, it is the tendency of objects to keep moving in a straight line at constant linear velocity.
Posted by Muskaan Mishra 4 years, 2 months ago
- 2 answers
Yogita Ingle 4 years, 2 months ago
A property closely related to an atom’s mass number is its atomic mass. The atomic mass of a single atom is simply its total mass and is typically expressed in atomic mass units or amu. By definition, an atom of carbon with six neutrons, carbon-12, has an atomic mass of 12 amu
Meghna Thapar 4 years, 2 months ago
Atomic mass (ma) is the mass of an atom. A single atom has a set number of protons and neutrons, so the mass is unequivocal (won't change) and is the sum of the number of protons and neutrons in the atom. ... Atomic weight is a weighted average of the mass of all the atoms of an element, based on the abundance of isotopes. It consists of one proton and one electron. The atomic mass for an atom of hydrogen is one dalton, which is calculated from the lone proton. Remember, electrons are too small to be considered in the atomic mass. Helium is the second lightest element, and is larger than hydrogen.
Posted by Sandeep Patil 4 years, 2 months ago
- 4 answers
Harleen Kaur 4 years, 2 months ago
Akshat Holland Minettee 4 years, 2 months ago
Harsh Vardhan 4 years, 2 months ago
Yogita Ingle 4 years, 2 months ago
Pure substances are substances that are made up of only one kind of particles and has a fixed or constant structure.
Pure substances are further classified as elements and compounds.
Posted by Komal Tank 4 years, 2 months ago
- 2 answers
Gaurav Seth 4 years, 2 months ago
The substances like CO2 and water move in and out of a cell by diffusion from the region of high concentration to low concentration. When the concentration of CO2 and water is higher in external environment than that inside the cell, CO2 and water moves inside the cell. When the concentration outside the cell becomes low and it is high inside the cell, they moves out.
Posted by 9N_14_Janvi Chaudhary 4 years, 2 months ago
- 1 answers
Meghna Thapar 4 years, 2 months ago
On the basis of physical states, all the matter can be classified into three groups – solids, liquids and gases. Examples of solids, liquids and gases are:
- Sugar, sand, iron, wood, rocks, minerals and ice are the examples of solids.
- Water, milk, oil, kerosene, petrol and alcohol are liquids.
- Air, oxygen, hydrogen, carbon dioxide and steam are gases.
Posted by Chandrika A G 4 years, 2 months ago
- 1 answers
Meghna Thapar 4 years, 2 months ago
- Diseases where microbes are the immediate causes are called infectious diseases.
- Protein-energy malnutrition (PEM) is a common childhood disorder and is primarily caused by deficiency of energy, protein, and micronutrients. PEM manifests as underweight (low body weight compared with healthy peers), stunting (poor linear growth), wasting (acute weight loss), or edematous malnutrition (kwashiorkor).
Posted by Sara Ali 4 years, 2 months ago
- 1 answers
Yogita Ingle 4 years, 2 months ago
- They are non-cellular organisms, which is enclosed in a protective envelope.
- The presence of spikes helps in attaching the viruses to the host cell.
- These viruses do not grow, neither respire nor metabolize, but they reproduce.
- They are surrounded with a protein coat – capsid and have a nucleic acid core comprising of DNA or RNA.
- They are considered both as living and non-living things. These viruses are inactive when they are present outside of host cells but become active within host cells. These viruses cause several infections and reproduce within the host cell by using the enzymes and raw materials.
Posted by Arpan Das 4 years, 2 months ago
- 1 answers
Posted by Roodraksh Bisen 4 years, 2 months ago
- 3 answers
Harsh Vardhan 4 years, 2 months ago
Gaurav Seth 4 years, 2 months ago
Atoms are defined as “the basic building blocks of matter”. It is the smallest constituent unit of matter that posses the properties of the chemical element. Atoms don't exist independently, instead, they form ions and molecules which further combine in large numbers to form matter that we see, feel and touch.
Sssssssssssssss Yyyyyyyyyyyyyyy 4 years, 2 months ago
Posted by Harsh Snehal Lokhande 4 years, 2 months ago
- 1 answers
Rajat Singh 4 years, 2 months ago
Posted by Anupriya Kumari 4 years, 2 months ago
- 5 answers
Yogita Ingle 4 years, 2 months ago
A,B and D are pure substances whereas c is not pure, i.e. Honey is not a pure substance.
Posted by Yati Singh 4 years, 2 months ago
- 2 answers
Yogita Ingle 4 years, 2 months ago
If copper sulphate crystals are added to water then the particles of copper sulphate crystals loses attraction between them and starts moving continuously and gets mixed up with water . Water color changes to blue .
Aryan Kumar 4 years, 2 months ago
Posted by Shani Baishwade 4 years, 2 months ago
- 1 answers
Posted by Raghav Aggarwal 4 years, 2 months ago
- 5 answers
Gaurav Seth 4 years, 2 months ago
Displacement is the shortest distance between the initial and the final position. Here, the car travels from stop A to B and returns to stop A.
Thus, the displacement of the car is 0 m/s.
let the distance travelled by the car from stop A to B = x km
The car travels from A to B and returns back to B. Thus,
total distance travelled = 2x km
Time while going from A to B = Distance travelled / Speed taken
= x/30 hours
Time while returning from stop B to A = x/50 hours
Posted by Ibar Rynjah 4 years, 2 months ago
- 1 answers
Posted by Priya Singh 4 years, 2 months ago
- 1 answers
Posted by Sushant Choudhary 4 years, 2 months ago
- 1 answers
Posted by Arpan Das 4 years, 2 months ago
- 4 answers
Posted by Suvinay Vats 4 years, 2 months ago
- 2 answers
Yogita Ingle 4 years, 2 months ago
Ground Tissue – involved in producing nutrients by photosynthesis and preserve nutrients.
Posted by Devashish Pandey 4 years, 2 months ago
- 2 answers
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