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प्रश्न
During respiration, glucose and oxygen enter our body cells and waste products carbon dioxide and water leave the body cells by the process of :
पर्याय
effusion
osmosis
diffusion
plasmolysis
उत्तर
diffusion
Because diffusion is a process in which there is a movement of particles from a region of high concentration to the one with low concentration across the cell membrane.
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संबंधित प्रश्न
Fill in the blank :
The state of matter with definite volume and definite shape is called______
Name the terms for the particles of matter which may or may not have independent existence.
Fill in the following blank with suitable words :
The best evidence that the particles of matter are constantly moving comes from the studies of ................. and ...................
Classify the following as elements or compounds :
Iron, Iron sulphide, Sulphur, Chalk, Washing soda, Sodium, Carbon, Urea
What are the three groups into which all the elements can be divided ? Name two elements belonging to each group.
Name a metal which is yellow in colour.
Classify the following into metals, non-metals and metalloids:
Silicon, Mercury, Diamond, Sulphur, Iodine, Germanium, Sodium, Carbon, Magnesium, Copper, Boron, Helium
Which of the following is not an element ?
Iron powder and sulphur powder were mixed together and divided into two parts A and B. When part A was heated strongly over a burner, then a substance C was formed. The part B was, however, not heated at all. When dilute hydrochloric acid was added to substance C, then gas D was evolved and when dilute hydrochloric acid was added to part B then gas E was evolved.
- What type of substance is B ?
- What type of substance is C ?
- Name the gas (i) D, and (ii) E ?
- State one characteristic property of gas D.
- Write one test to identify gas E.
Choose one term from the following which includes the other three :
aerosol, emulsion, colloid, sol
Define solubility of a substance. How does it vary with temperature ?
Which of the following can be called a suspension ?
Name the process by which the various gases of the air are separated.
Fill in the following blanks with suitable words :
The gases of air can be separated by fractional distillation of liquid air because they have different..............
The material which is added to water during purification process at the water works so as to disinfect it is :
Asmita went to buy an earthen pot. There she saw many things kept for sale.
What is the difference between a substance and an object?
Define the term matter.
What type of matter glass is?
Liquids cannot be compressed and they have fixed volume.
Intermolecular space is maximum in ______.
