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प्रश्न
What processes would you consider essential for maintaining life?
उत्तर
- Nutrition: It is the process by which living organisms obtain nutrients or produce them and convert them into a more straightforward, absorbable form through a series of biochemical reactions.
- Respiration: It is the process of oxidizing the respiratory substrate, usually glucose, within cells, leading to the release of carbon dioxide and energy in the form of ATP.
- Transportation: It is a life process where a substance, produced or absorbed in one part of the organism, is transported to other parts of its body.
- Excretion: It is a biological process through which an organism eliminates harmful waste products generated from metabolism.
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Response to stimuli: A living organism must be capable of detecting changes in its environment and responding to them for survival.
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संबंधित प्रश्न
Given below are the end products of different reactions involving glucose. Write the appropriate end product in front of the following:
(1) Anaerobic reaction =
(2) Reaction in human muscles =
(3) Aerobic respiration
(4) Reaction in plant cells =
(5) Reaction in liver =
What are outside raw materials used for by an organism?
Match the terms in column I with their uses in column II
| Column I | Column II |
| (i) Heart | (a) Pipes for transport in humans |
| (ii) Arteries and Veins | (b) Clotting of blood |
| (iii) Xylem vessels | (c) Pumping organ |
| (iv) RBC | (d) Water transport in plants |
| (v) Platelets | (e) Carrier of oxygen |
Name the green dot like structures in some cells observed by a student when a leaf peel was viewed under a microscope. What is this green colour due to?
Fill in the blank and explain the statement.
Our muscle cells perform ______ type of respiration during exercise.
Distinguish between Glycolysis and TCA cycle.
Give scientific reason.
Oxygen is necessary for complete oxidation of glucose.
Answer in detail.
Explain the Kreb's cycle with reaction.
Complete the following chart and state which process of energy production it represents:
Explain the ‘inhalation’.
What are the main energy sources of living organisms?
Assertion: When air is passed through lime water, lime water turns milky.
Reason: Air contains 78% nitrogen and 21% oxygen.
Choose the forms in which most plants absorb nitrogen
- Proteins
- Nitrates and Nitrites
- Urea
- Atmospheric nitrogen
In each of the following situations what happens to the rate of photosynthesis?
- Cloudy days
- No rainfall in the area
- Good manuring in the area
- Stomata get blocked due to dust
Match the terms in Column (A) with those in Column (B)
| Column (A) | Group (B) |
| (a) Trypsin | (i) Pancreas |
| (b) Amylase | (ii) Liver |
| (c) Bile | (iii) Gastric glands |
| (d) Pepsin | (iv) Saliva |
Explain the following concept in short:
Balanced Diet
Explain the following concept in short:
Role of circulatory system in energy production
