The nucleus is the cell’s control center. It contains genetic material (DNA) that carries instructions for all cellular processes—like protein production, growth and division. It regulates what the cell does and when. In multicellular organisms, the nucleus ensures proper coordination between cells.Read more
The nucleus is the cell’s control center. It contains genetic material (DNA) that carries instructions for all cellular processes—like protein production, growth and division. It regulates what the cell does and when. In multicellular organisms, the nucleus ensures proper coordination between cells. Its role in inheritance and cell regulation makes it one of the most vital organelles.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 2 The Invisible Living World: Beyond Our Naked Eye Extra Questions & Answer:
The cytoplasm is a thick, jelly-like substance inside the cell where vital activities occur. It surrounds and supports the cell’s organelles and allows them to float and function. Nutrients, enzymes and waste move through it. Most biochemical reactions—such as energy production and protein synthesisRead more
The cytoplasm is a thick, jelly-like substance inside the cell where vital activities occur. It surrounds and supports the cell’s organelles and allows them to float and function. Nutrients, enzymes and waste move through it. Most biochemical reactions—such as energy production and protein synthesis—take place here, making the cytoplasm crucial for the cell’s metabolism, structure and communication.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 2 The Invisible Living World: Beyond Our Naked Eye Extra Questions & Answer:
When you catch a cold, your immune system quickly responds. You may get a runny nose, cough or fever. These symptoms are your body’s way of fighting off the virus. White blood cells increase to destroy the virus. Fever helps kill the virus by raising body temperature. All these changes show how yourRead more
When you catch a cold, your immune system quickly responds. You may get a runny nose, cough or fever. These symptoms are your body’s way of fighting off the virus. White blood cells increase to destroy the virus. Fever helps kill the virus by raising body temperature. All these changes show how your body defends itself from infection and works to restore health.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 3 Health: The Ultimate Treasure Extra Questions & Answer:
Diseases like smallpox and polio have decreased due to successful vaccination programmes. However, lifestyle-related diseases such as diabetes and heart problems are now more common due to poor diet, physical inactivity, stress and pollution. These diseases are non-communicable and result from choicRead more
Diseases like smallpox and polio have decreased due to successful vaccination programmes. However, lifestyle-related diseases such as diabetes and heart problems are now more common due to poor diet, physical inactivity, stress and pollution. These diseases are non-communicable and result from choices in our daily lives rather than germs. Hence, while medical science helped control some diseases, changing lifestyles have created new health challenges.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 3 Health: The Ultimate Treasure Extra Questions & Answer:
Climate change can increase diseases by creating favorable conditions for germs and vectors like mosquitoes. Warmer weather and irregular rains can increase mosquito-borne diseases like malaria and dengue. Poor air quality can trigger asthma and contaminated water due to floods can cause infections.Read more
Climate change can increase diseases by creating favorable conditions for germs and vectors like mosquitoes. Warmer weather and irregular rains can increase mosquito-borne diseases like malaria and dengue. Poor air quality can trigger asthma and contaminated water due to floods can cause infections. Changes in the environment affect both people and animals, increasing the risk of new or re-emerging diseases spreading faster than before.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 3 Health: The Ultimate Treasure Extra Questions & Answer:
What role does the nucleus play in a cell?
The nucleus is the cell’s control center. It contains genetic material (DNA) that carries instructions for all cellular processes—like protein production, growth and division. It regulates what the cell does and when. In multicellular organisms, the nucleus ensures proper coordination between cells.Read more
The nucleus is the cell’s control center. It contains genetic material (DNA) that carries instructions for all cellular processes—like protein production, growth and division. It regulates what the cell does and when. In multicellular organisms, the nucleus ensures proper coordination between cells. Its role in inheritance and cell regulation makes it one of the most vital organelles.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 2 The Invisible Living World: Beyond Our Naked Eye Extra Questions & Answer:
https://www.tiwariacademy.com/ncert-solutions/class-8/science/
See lessWhat is the function of cytoplasm in a cell?
The cytoplasm is a thick, jelly-like substance inside the cell where vital activities occur. It surrounds and supports the cell’s organelles and allows them to float and function. Nutrients, enzymes and waste move through it. Most biochemical reactions—such as energy production and protein synthesisRead more
The cytoplasm is a thick, jelly-like substance inside the cell where vital activities occur. It surrounds and supports the cell’s organelles and allows them to float and function. Nutrients, enzymes and waste move through it. Most biochemical reactions—such as energy production and protein synthesis—take place here, making the cytoplasm crucial for the cell’s metabolism, structure and communication.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 2 The Invisible Living World: Beyond Our Naked Eye Extra Questions & Answer:
https://www.tiwariacademy.com/ncert-solutions/class-8/science/
See lessHow does your body respond to an infection such as common cold?
When you catch a cold, your immune system quickly responds. You may get a runny nose, cough or fever. These symptoms are your body’s way of fighting off the virus. White blood cells increase to destroy the virus. Fever helps kill the virus by raising body temperature. All these changes show how yourRead more
When you catch a cold, your immune system quickly responds. You may get a runny nose, cough or fever. These symptoms are your body’s way of fighting off the virus. White blood cells increase to destroy the virus. Fever helps kill the virus by raising body temperature. All these changes show how your body defends itself from infection and works to restore health.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 3 Health: The Ultimate Treasure Extra Questions & Answer:
https://www.tiwariacademy.com/ncert-solutions/class-8/science/
See lessWe rarely see cases of smallpox or polio these days, but diseases like diabetes and heart problems are more common. Why?
Diseases like smallpox and polio have decreased due to successful vaccination programmes. However, lifestyle-related diseases such as diabetes and heart problems are now more common due to poor diet, physical inactivity, stress and pollution. These diseases are non-communicable and result from choicRead more
Diseases like smallpox and polio have decreased due to successful vaccination programmes. However, lifestyle-related diseases such as diabetes and heart problems are now more common due to poor diet, physical inactivity, stress and pollution. These diseases are non-communicable and result from choices in our daily lives rather than germs. Hence, while medical science helped control some diseases, changing lifestyles have created new health challenges.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 3 Health: The Ultimate Treasure Extra Questions & Answer:
https://www.tiwariacademy.com/ncert-solutions/class-8/science/
See lessCould climate change lead to new types of diseases?
Climate change can increase diseases by creating favorable conditions for germs and vectors like mosquitoes. Warmer weather and irregular rains can increase mosquito-borne diseases like malaria and dengue. Poor air quality can trigger asthma and contaminated water due to floods can cause infections.Read more
Climate change can increase diseases by creating favorable conditions for germs and vectors like mosquitoes. Warmer weather and irregular rains can increase mosquito-borne diseases like malaria and dengue. Poor air quality can trigger asthma and contaminated water due to floods can cause infections. Changes in the environment affect both people and animals, increasing the risk of new or re-emerging diseases spreading faster than before.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 3 Health: The Ultimate Treasure Extra Questions & Answer:
https://www.tiwariacademy.com/ncert-solutions/class-8/science/
See less