11. Match the cell
in column B :
Column A
(i) Mitochondria
(i) Lysosomes
(iii) ER
(iv) Ribosomes
(v) Chloroplasts
(vi) Centrosome
(vii) Cell membrane
(viii) Golgi complex
Column B
(a) Protein synthesis 4
(b) Cell division 6
(c) Liberation of energy
(d) Intracellular digestion 2
(e) Vitellogenesis
(1) Supporting framework of a cell
(9) Photosynthesis 5
(h) Regulation of transportation of
materials into and out of the cell.
12. Given below are the diagrammatic sketches of certain
generalised cells.
Answers
Answer:
Lysosomes are the smallest organelles in the cell. It contains a hydrolytic enzyme that digests the wastes and other bad organelles. When the cell dies, the lysosomes digest the dead cell. Without lysosomes, living organisms would become filled with dead cells. Thus, lysosomes are called as suicidal bags.
Mitochondria play host to one of the most important processes in your body: cellular respiration. Taking in glucose and oxygen, mitochondria produce energy, which they capture and package as energy-rich molecules of ATP.
The ribosome is the structure within living cells that manufactures proteins. It attaches to a strand of messenger RNA and wriggles along it, 'reading' the genetic code as it goes and translating the message into a lengthening chain of amino acids.
The chloroplast is called as the kitchen of the cell, as the food is prepared in this part of the cell. The chloroplast is the cell organelle which gives a green colour to the leaf. It produces glucose and then it is converted into sucrose and then transported to whole the plant body or wherever required.
Endoplasmic reticulum (ER) is known as the circulatory system of the cell because it transforms poisons, waste and toxic substances to harmless products. Rough ER has ribosomes which construct proteins; Smooth ER which has no ribosomes processes lipids and carbohydrates.
So, the correct answer is option A.