Which organelle of the cell controls all its activities?
Nucleus
Lysosomes
Mitochondria
Ribosomes
Nucleus is considered as the controlling centre of the cell as it controls all the activities of the cell.
Choose the right word to fill in the blanks.
(a) The ………… is an organelle found only in plant cells.
1. ribosomes 2. mitochondria 3.plastids 4. nucleus
(b) Chromosomes are found in the organelle called ………… .
1. plastids 2. mitochondria 3.nucleus 4. Golgi body
(c) The ………… cell carries out photosynthesis.
1. plant 2. yeast 3.muscle 4. nerve
Question 24 The only cell organelle seen in prokaryotic cell is ________.
(a) Mitochondria (b) Ribosomes (c) Plastids (d) Lysosomes
Question 3 Read the different combinations of terms given below: (a) cell wall, cell membrane, nucleus, plastid (b) cell wall, nucleus, ribosome, chromosome (c) cell membrane, mitochondria, ribosome, chromosome (d) cell membrane, ribosome, mitochondria, chloroplast The correct combination of terms with reference to an animal cell is ___.
Which one of the following cell organelles is correctly matched with its function ? (a) Ribosomes — Synthesis of proteins (b) Mitochondria — Secretion of enzymes (c) Plasma membrane — Freely permeable (d) Centrosome — Carries genes