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प्रश्न
Which of the following is an incorrect statement?
पर्याय
Organisms grow with time
Organisms must repair and maintain their structure
Movement of molecules does not take place among cells
Energy is essential for life processes
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उत्तर
Movement of molecules does not take place among cells
Explanation -
The movement of molecule is a vital process. Movement of molecules in cells take place in active and passive modes such as Diffusion, osmosis, facilitated diffusion etc.
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संबंधित प्रश्न
Mention any two components of blood.
The exchange of respiratory gases in the cells of plants occurs by the process of _______________
(a) Osmosis
(b) Diffusion
(c) Glycolysis
(d) exhalation
Name the process by which plant parts like roots, stems, and leaves get oxygen required for respiration.
Name the pores in a leaf through which respiratory exchange of gases takes place.
Name an animal which depends on simple diffusion of gases for breathing.
Fill in the Following Blank with Suitable Word.
_________ In the Lungs Provide a Very Large Surface Area for Gaseous Exchange.
Describe the process of respiration in Amoeba. State whether it is anaerobic respiration or aerobic respiration.
Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms?
Name the energy currency in the living organisms. When and where is it produced?
Which of the following increases in muscle cells when they are lacking in oxygen?
Which of the following is known as the energy currency of the cells in biology?
The breathing and respiration in woody stem of a plant takes place through:
Some sugar solution is taken in a test-tube and a little of substance X in powder form is added to it. The mouth of test-tube is closed with a cork and allowed to stand for sometime. On opening the cork, a characteristic smell of substance Y is obtained and a gas Z is also observed to be formed. The gas Z extinguishes a burning matchstick.
(a) What could be (i) X, (ii) Y, and (iii) Z?
(b) What is the process of converting sugar into substance Y by the action of X known as?
(c) What type of respiration is exhibited by X in the above process?
Out of xylem and phloem, which one carries materials only upwards?
Given below is an example of certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
Mitochondria and _____________.
Given below is an example of a certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
Pleura and _____________.
Given below is an example of certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
Diaphragm and _____________.
Air that enters through the nose passes into this tube.
Which of the following statement(s) is (are) true about respiration?
- During inhalation, ribs move inward and the diaphragm is raised
- In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses into blood and carbon dioxide from the blood into the alveolar air
- Haemoglobin has a greater affinity for carbon dioxide than oxygen
- Alveoli increase surface area for the exchange of gases
Which of the following equations is the summary of photosynthesis?
