On adding salt, Vegetables release water due to exosmosis. Exosmosis occurs whenever the external medium is hypertonic as compared to the osmotic concentration inside living cells.
On adding salt, Vegetables release water due to exosmosis. Exosmosis occurs whenever the external medium is hypertonic as compared to the osmotic concentration inside living cells.
Digested food is taken in the intestinal cells by the following process: (i) Glucose, amino acids and some ions - Active transport. (ll) Fatty acids, glycerol - Diffusion (Passive transport) (iii) Water - Osmosis.
Digested food is taken in the intestinal cells by the following process:
(i) Glucose, amino acids and some ions – Active transport.
(ll) Fatty acids, glycerol – Diffusion (Passive transport)
(iii) Water – Osmosis.
Concentrated salt solution is a hypertonic solution so causes irritation and excessive dehydration in the wall of alimentary canal dr.ie to exosmosis. There is uncomfortable stretching which causes reverse movements and hence vomiting.
Concentrated salt solution is a hypertonic solution so causes irritation and excessive dehydration in the wall of alimentary canal dr.ie to exosmosis. There is uncomfortable stretching which causes reverse movements and hence vomiting.
Clothes are washed with soap or detergent solution. This solution is hypertonic as compared to osmotic concentration of our skin cells. The washing solution, therefore, results in exosmosis in the skin cells that come in contact with it for some time. Due to this reason, the skin over the fingers shRead more
Clothes are washed with soap or detergent solution. This solution is hypertonic as compared to osmotic concentration of our skin cells. The washing solution, therefore, results in exosmosis in the skin cells that come in contact with it for some time. Due to this reason, the skin over the fingers shrinks while washing
clothes for a long time.
Yes, cell is a building unit of every living organism as every living being is made up of one or more cells. For example, in unicellular or acellular organisms, the single cell performs all the functions of life. In multicellular organisms all the cells have a similar basic structure and perform a sRead more
Yes, cell is a building unit of every living organism as every living being is made up of one or more cells. For example, in unicellular or acellular organisms, the single cell performs all the functions of life. In multicellular organisms all the cells have a similar basic structure and perform a similar basic life activities. However, they become specialised to form components of different structures that perform different functions. Cells are first organised into tissues, each with a specific function, e.g., contraction by the muscular tissue. Tissues are organised to form organs with each organ performing a specific task, e.g.’ heart, kidney, lung, stomach, eyes. Organs are grouped into organ systems, each with a major function, e.g.’ circulatory, system, excretory system, respiratory system, digestive system, skeletal system. A living organism has a number of organ systems. Thus, in all such organisational complexity, cell remains the basic building unit of the organism.
There are six major controls of the climate of any place viz., latitude, altitude, pressure and wind system, distance from the sea, ocean currents and relief features. (i) Latitude: Due to the curvature of the earth, the amount of solar energy received differs according to latitude. Thus, air temperRead more
There are six major controls of the climate of any place viz., latitude, altitude, pressure and wind system, distance from the sea, ocean currents and relief features.
(i) Latitude: Due to the curvature of the earth, the amount of solar energy received differs according to latitude. Thus, air temperature decreases from the equator towards the poles.
(ii) Altitude: At the higher altitude, the atmosphere becomes less dense and temperature decreases. The hills are, therefore, cooler during summers.
(iii) Pressure and wind system: It depends on the latitude and altitude of the place. Thus, it too influences the temperature and rainfall pattern.
(iv) Distance from sea: Sea has its moderating influence on climate. As such when the distance from the sea increases, people experience extreme weather conditions.
(v) Ocean currents: These currents affect the climate of the coastal areas because any coastal area with warm or cold currant will be warmed currant if the winds are onshore.
(vi) Relief: Relief too affects the climate of a place. For example, high mountains act as barriers for cold and hot winds. They may cause precipitation if they are high enough and lie in the path of rain-bearing winds. The leeward side of mountains remains dry.
Name two organelles in plant cell that contain their own genetic materials and ribosomes.
(i) Plastids; (ii) Mitochondria.
(i) Plastids; (ii) Mitochondria.
See lessHow do substances such as carbon dioxide and water prove in and out of the cell?
By diffusion and osmosis respectively.
By diffusion and osmosis respectively.
See lessWrite the name of different plant parts in which chloroplast, chromoplast and leucoplasts are present.
1. Chromoplast: Flower (petals) and fruits 2. Chloroplast : Green leaves and green parts. 3. Leucoplast : Root and underground stem.
1. Chromoplast: Flower (petals) and fruits
See less2. Chloroplast : Green leaves and green parts.
3. Leucoplast : Root and underground stem.
Bacteria do not have chloroplasts but some bacteria are photoautotrophic in nature and perform photosynthesis. Which part of bacterial cell perform this?
Photoautotrophic bacteria posses photosvnthetic pigments inside small vesicles which may be attached to the plasma membrane.
Photoautotrophic bacteria posses photosvnthetic pigments inside small vesicles which may be attached to the plasma membrane.
See lessIf you are provided with some vegetables to cook, you generally add salt into vegetables during cooking process. After adding salt, vegetables release water. What mechanism is responsible for this?
On adding salt, Vegetables release water due to exosmosis. Exosmosis occurs whenever the external medium is hypertonic as compared to the osmotic concentration inside living cells.
On adding salt, Vegetables release water due to exosmosis. Exosmosis occurs whenever the external medium is hypertonic as compared to the osmotic concentration inside living cells.
See lessWe eat food composed of all the nutrients such as carbohydrates, fats, vitamins, minerals and water. After digestion, they are absorbed in the form of glucose, amino acids, fatty acids, glycerol, etc. what mechanisms are involved in the absorption of digested food and water?
Digested food is taken in the intestinal cells by the following process: (i) Glucose, amino acids and some ions - Active transport. (ll) Fatty acids, glycerol - Diffusion (Passive transport) (iii) Water - Osmosis.
Digested food is taken in the intestinal cells by the following process:
See less(i) Glucose, amino acids and some ions – Active transport.
(ll) Fatty acids, glycerol – Diffusion (Passive transport)
(iii) Water – Osmosis.
A person takes concentrated solution of salt. After some time he starts vomiting. What is the phenomenon responsible for such a situation? Explain
Concentrated salt solution is a hypertonic solution so causes irritation and excessive dehydration in the wall of alimentary canal dr.ie to exosmosis. There is uncomfortable stretching which causes reverse movements and hence vomiting.
Concentrated salt solution is a hypertonic solution so causes irritation and excessive dehydration in the wall of alimentary canal dr.ie to exosmosis. There is uncomfortable stretching which causes reverse movements and hence vomiting.
See lessWhy does the skin of your fingers shrinks when you was clothes for a long time?
Clothes are washed with soap or detergent solution. This solution is hypertonic as compared to osmotic concentration of our skin cells. The washing solution, therefore, results in exosmosis in the skin cells that come in contact with it for some time. Due to this reason, the skin over the fingers shRead more
Clothes are washed with soap or detergent solution. This solution is hypertonic as compared to osmotic concentration of our skin cells. The washing solution, therefore, results in exosmosis in the skin cells that come in contact with it for some time. Due to this reason, the skin over the fingers shrinks while washing
See lessclothes for a long time.
Do you agree that ”A cell is a building unit of an organism’’?
Yes, cell is a building unit of every living organism as every living being is made up of one or more cells. For example, in unicellular or acellular organisms, the single cell performs all the functions of life. In multicellular organisms all the cells have a similar basic structure and perform a sRead more
Yes, cell is a building unit of every living organism as every living being is made up of one or more cells. For example, in unicellular or acellular organisms, the single cell performs all the functions of life. In multicellular organisms all the cells have a similar basic structure and perform a similar basic life activities. However, they become specialised to form components of different structures that perform different functions. Cells are first organised into tissues, each with a specific function, e.g., contraction by the muscular tissue. Tissues are organised to form organs with each organ performing a specific task, e.g.’ heart, kidney, lung, stomach, eyes. Organs are grouped into organ systems, each with a major function, e.g.’ circulatory, system, excretory system, respiratory system, digestive system, skeletal system. A living organism has a number of organ systems. Thus, in all such organisational complexity, cell remains the basic building unit of the organism.
See lessDescribe major controls of the climate of any place.
There are six major controls of the climate of any place viz., latitude, altitude, pressure and wind system, distance from the sea, ocean currents and relief features. (i) Latitude: Due to the curvature of the earth, the amount of solar energy received differs according to latitude. Thus, air temperRead more
There are six major controls of the climate of any place viz., latitude, altitude, pressure and wind system, distance from the sea, ocean currents and relief features.
See less(i) Latitude: Due to the curvature of the earth, the amount of solar energy received differs according to latitude. Thus, air temperature decreases from the equator towards the poles.
(ii) Altitude: At the higher altitude, the atmosphere becomes less dense and temperature decreases. The hills are, therefore, cooler during summers.
(iii) Pressure and wind system: It depends on the latitude and altitude of the place. Thus, it too influences the temperature and rainfall pattern.
(iv) Distance from sea: Sea has its moderating influence on climate. As such when the distance from the sea increases, people experience extreme weather conditions.
(v) Ocean currents: These currents affect the climate of the coastal areas because any coastal area with warm or cold currant will be warmed currant if the winds are onshore.
(vi) Relief: Relief too affects the climate of a place. For example, high mountains act as barriers for cold and hot winds. They may cause precipitation if they are high enough and lie in the path of rain-bearing winds. The leeward side of mountains remains dry.