Advertisements
Advertisements
प्रश्न
Explain the Steps of Glycolysis.
उत्तर
- Glycolysis is the first step of aerobic/anaerobic respiration and occurs in the cytoplasm of the cell.
- In this process, a molecule of glucose is oxidized in a stepwise manner to form two molecules each of pyruvic acid, ATP, NADH2 and water.
- Pyruvic acid formed during this process is converted into acetyl-coenzyme A with the release of two molecules each of NADH2 and CO2. This acetyl-coenzyme A then enters the Krebs cycle.
APPEARS IN
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 =
Name the life process of an organism that helps in the growth of its population.
What criteria do we use to decide whether something is alive?
What are outside raw materials used for by an organism?
Match the organisms given in column I with the processes given in column II:
| Column I | Column II | ||
| (i) | Leech | (a) | Holozoic nutrition |
| (ii) | Amoeba | (b) | Autotrophic nutrition |
| (iii) | Mushroom | (c) | Parasitic nutrition |
| (iv) | Green plant | (d) | Saprophytic nutrition |
Match the terms in column I with those in column II :
| Column I | Column II | ||
| (i) | Trypsin | (a) | Liver |
| (ii) | Amylase | (b) | Gastric glands |
| (iii) | Bile | (c) | Pancreas |
| (iv) | Pepsin | (d) | Saliva |
A person lives near a forest. Make a list of four items which he can get from the forest to meet his daily needs.
Skin : Keratin : : Blood : ____________
Rewrite the food-chain given below with correct sequence.
Grasshopper– Snake– Paddyfield– Eagle– Frog
Fill in the blank and explain the statement.
Our muscle cells perform ______ type of respiration during exercise.
Write definition
Nutrients
Write the definition.
Proteins
Write definition.
Glycolysis
Distinguish between Glycolysis and TCA cycle.
Give scientific reason.
Oxygen is necessary for complete oxidation of glucose.
Give scientific reason.
Kreb's cycle is also known as citric acid cycle.
Answer in detail.
How all the life processes contribute to the growth and development of the body?
Explain the ‘inhalation’.
Why is there a difference in the rate of breathing between aquatic organisms and terrestrial organisms? Explain.
Name the organs that form the excretory system in human beings.
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.
How do the guard cells regulate opening and closing of stomatal pores?
Match the words of Column (A) with that of Column (B)
| Column A | Column B |
| Phloem | (i) Excretion |
| Nephron | (ii) Translocation of food |
| Veins | (iii) Clotting of blood |
| Platelets | (iv) Deoxygenated blood |
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
Explain the following concept in short:
Balanced Diet
Explain the following concept in short:
Role of circulatory system in energy production
Give scientific reason.
Cell division is one of the important properties of cells and organisms.
Classify vitamins according to their solubility.
Give one example of each of the classifications of vitamins.
