Advertisements
Advertisements
प्रश्न
Write the definition.
Proteins
उत्तर
Proteins: Large molecules composed of one or more chains of amino acids in a specific order determined by the base sequence of nucleotides in the DNA coding for the protein.
Proteins are required for the structure, function, and regulation of the body's cells, tissues, and organs. Each protein has unique functions. Proteins are essential components of muscles, skin, bones, and the body as a whole.
Examples of proteins include whole classes of important molecules, among them enzymes, hormones, and antibodies.
Proteins are one of the three types of nutrients used as energy sources by the body, the other two being carbohydrates and fat. Proteins and carbohydrates each provide 4 calories of energy per gram, while fats produce 9 calories per gram.
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 processes would you consider essential for maintaining life?
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 |
A person lives near a forest. Make a list of four items which he can get from the forest to meet his daily needs.
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?
Skin : Keratin : : Blood : ____________
Complete the following flowchart.
Write definition.
Glycolysis
Distinguish between Glycolysis and TCA cycle.
Give scientific reason.
Oxygen is necessary for complete oxidation of glucose.
Answer in detail.
How all the life processes contribute to the growth and development of the body?
Complete the following chart and state which process of energy production it represents:
Name the organs that form the excretory system in human beings.
Find an odd one out.
What are the main energy sources of living organisms?
Explain the Steps of Glycolysis.
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
How do the guard cells regulate opening and closing of stomatal pores?
Why do fishes die when taken out of water?
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
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.
