I: | semi-autonomous organelles. |
II: | formed by the division of pre-existing organelles and they contain DNA but lack protein-synthesizing machinery. |
Which of the following structure is not found in a prokaryotic cell?
1. Nuclear envelope
2. Ribosome
3. Mesosome
4. Plasma membrane
Match the columns and identify the correct option.
Column I | Column II | ||
A. | Thylakoids | (i) | Disc-shaped sacs in Golgi apparatus |
B. | Cristae | (ii) | Condensed structure of DNA |
C. | Cisternae | (iii) | Flat membranous sacs in stroma |
D. | Chromatin | (iv) | Infolding in mitochondria |
1. A → (iv), B → (iii), C → (i), D → (ii)
2. A → (iii), B → (iv), C → (i), D → (ii)
3. A → (iii), B → (i), C → (iv), D → (ii)
4. A → (iii), B → (iv), C → (ii), D → (i)
Balbiani rings are sites of?
1. Lipid synthesis
2. Nucleotide synthesis
3. Polysaccharide synthesis
4. RNA and protein synthesis
Which of the following is not membrane-bound?
1. Vacuoles
2. Ribosomes
3. Lysosome
4. Mesosomes
The structures that help some bacteria to attach to rocks and/or host tissues are?
1. Rhizoids
2. Fimbriae
3. Mesosomes
4. Holdfast
Cellular organelles with membranes are:
1. Nucleus, ribosome and mitochondria
2. Chromosomes, ribosomes and endoplasmic reticulum
3. Endoplasmic reticulum, ribosome and nuclei
4. Lysosomes, Golgi apparatus and mitochondria