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Ask QuestionPosted by Khushi Kumawat 5 years ago
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Aliya Mizaj 5 years ago
Deepika Sharma 5 years ago
Anant Singh 5 years ago
Posted by Harsh Kumar 5 years ago
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Ram Pal 5 years ago
Yogita Ingle 5 years ago
| Prokaryotic cell | Eukaryotic cell | |
| 1 | Nucleus absent | Nucleus present |
| 2 | One chromosome present | More than one chromosome |
| 3 | Membrane bound cell organelles absent | Membrane bound cell organelles present |
| 4 | Cell size very small. | Cell size comparatively larger. |
| 5 | Cell division occurs by budding or fission. | Cell division occurs by mitosis or meiosis |
Posted by Nifty Sharma 5 years ago
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Posted by Ankit Singh 5 years ago
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Yogita Ingle 5 years ago
J. E. Purkinje in the year 1839 coined the term 'protoplasm' for the fluid substance of the cell.
Posted by Mukul Gupta 5 years ago
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Chhavi Sharma 5 years ago
Aliya Mizaj 5 years ago
Yogita Ingle 5 years ago
Everything that exists in the earth is a form of a matter which is further defined as any substance that occupies space and has mass. The matter is further divided into various forms such as solid, liquid and gas.
Bhumika Sharma ✓ 5 years ago
Posted by K.Kaviya Ix A 9032 5 years ago
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Yogita Ingle 5 years ago
The following precautions can be take:
- Take bath daily
- Keep yourself clean and hygenic
- Wash your hands before and after eating food
- Keep your surroundings clean
- Have a balanced diet
- Exercise daily
- Maintain proper disposal of waste or garbage
- Have clean drinking water
- Avoid the places of over crowding
Posted by K.Kaviya Ix A 9032 5 years ago
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Manish Kumar 5 years ago
Posted by K.Kaviya Ix A 9032 5 years ago
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Yogita Ingle 5 years ago
| Infectious diseases | Non-infectious diseases |
| Diseases that spread from one person to another are called communicable diseases. | They do not spread to others and they restrain within a person who has contracted them |
| They are caused by microorganisms called pathogens such as bacteria, protozoans, viruses, etc. | These dise ases are caused by pathogens, but other factors such as age, nutritional deficiency, the gender of an individual, and lifestyle also influence the disease |
| Examples: Cholera, chickenpox, malaria | Examples: Diabetes, cancer, asthma, etc. |
Posted by Gourav Yadav 5 years ago
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Gaurav Seth 5 years ago
The specific function of the cardiac muscle is to control the contraction and relaxation of the heart.
The uninucleated, striated, tubular and branched muscles that form the wall of heart are known as cardiac muscles. They serve to bring about rhythmic contraction and relaxation of heart to allow pumping of blood throughout the life. Since, these muscles contract without any nerve stimulation/control, they are involuntary in nature.
Posted by Srestha Ghosh 5 years ago
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Posted by Amana Fathima Shanavas 5 years ago
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Sabaya Debbarma 5 years ago
Posted by Sabaya Debbarma 5 years ago
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Yogita Ingle 5 years ago
A cell performs these major functions essential for the growth and development of an organism. Important functions of cell are as follows:
Provides Support and Structure
All the organisms are made up of cells. They form the structural basis of all the organisms. The cell wall and the cell membrane are the main components that function to provide support and structure to the organism. For eg., the skin is made up of a large number of cells. Xylem present in the vascular plants is made of cells that provide structural support to the plants.
Facilitate Growth Mitosis
In the process of mitosis, the parent cell divides into the daughter cells. Thus, the cells multiply and facilitate the growth in an organism.
Posted by Nayan . R Nayan . R 5 years ago
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Posted by Jungkook Jeon 5 years ago
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Poonam Anand 5 years ago
Yogita Ingle 5 years ago
Diseases which do not spread from one person to another is called non-infectious diseases.
Example, cancer.
Posted by Jungkook Jeon 5 years ago
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Poonam Anand 5 years ago
Yogita Ingle 5 years ago
Diseases which can spread from one person to another and microbes are the immediate cause for these diseases are called infectious diseases. Example, typhoid
Posted by Jungkook Jeon 5 years ago
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Poonam Anand 5 years ago
Yogita Ingle 5 years ago
Those diseases which last for very short period of time are called acute diseases. Example, headache and cold.
Posted by Jungkook Jeon 5 years ago
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Poonam Anand 5 years ago
Yogita Ingle 5 years ago
The diseases which last for very long period of time are called chronic disease Example, tuberculosis and jaundice.
Posted by Hemadharshini P 5 years ago
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Yogita Ingle 5 years ago
It is the ability of an atom to gain or lose electron in order to achieve the noble gas configuration. It refers to the ability of an element to combine with other element. It is obtained by determining the number of electrons in the outermost shell (also called valence shell) of each atom of an element. For instance, sodium has 1 electron in its outermost shell and hence valency of sodium is 1.
Posted by Dhyey Modha 5 years ago
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Yogita Ingle 5 years ago
Gaseous state
- They do not have definite shape and take up the shape of the container.
- They do not possess definite volume due to weakest intermolecular forces.
- They are not rigid.
- They are easily compressible due to excess space between the particles of gas which compresses on applying pressure.
- They can easily undergo diffusion due to the fact that molecules in a gas moves at a very fast rate due to which speed of diffusion is very large.
- They can flow in all possible directions.
Posted by Saraswaty Chandel 5 years ago
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Posted by Freddy Mon 5 years ago
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Meghna Thapar 5 years ago
Epithelial tissues are widespread throughout the body. They form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands. They perform a variety of functions that include protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception. Epithelial tissue is scutoid shaped, tightly packed and form a continuous sheet. It has almost no intercellular spaces. All epithelia is usually separated from underlying tissues by an extracellular fibrous basement membrane. The lining of the mouth, lung alveoli and kidney tubules are all made of epithelial tissue.
Posted by Chetna Mehra 5 years ago
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Deepika Sharma 5 years ago
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True, Atoms are always neutral in nature. The nucleus of an atom (contains protons and neutrons) remains unchanged after ordinary chemical reactions, but atoms can readily gain or lose electrons.
Posted by Jasvir Kaur 5 years ago
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Yogita Ingle 5 years ago
- Speed: Distance travelled by the object in unit time.
- The SI unit of speed is metre per second. This is represented by the symbol m s–1 or m/s.
- Speed is a scalar quantity; it only has direction.
Speed = Distance/ Time
Bhumika Sharma ✓ 5 years ago
Posted by Uvais Zaidi 5 years ago
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Posted by Vedant Gupta 5 years ago
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Posted by Vedant Gupta 5 years ago
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Posted by Abhishek Singh 5 years ago
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Naina Gupta 5 years ago
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Lysosomes are sphere-shaped sacs filled with hydrolytic enzymes that have the capability to break down many types of biomolecules. Lysosomes are known as suicide bags of the cell because they contain lytic enzymes capable of digesting cells and unwanted materials.
Posted by Aman Mishra 5 years ago
- 3 answers
Bhumika Sharma ✓ 5 years ago
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