Which one of the following also act as a ribozyme in a bacterial cell?
1. snRNA
2. hn RNA
3. 23 S rRNA
4. 5 S rRNA
In eubacteria, a cellular component that resembles eukaryotic cells is
1. nucleus
2. ribosomes
3. cell wall
4. plasma membrane
Peptide synthesis inside a cell takes place in
1. mitochondria
2. chromoplast
3. ribosomes
4. chloroplast
Which one of the following structures between two adjacent cells is an effective transport
pathway?
1. | Plasmodesmata | 2. | Plastoquinones |
3. | Endoplasmic rcticulum | 4. | Plasmalemma |
Which one of the following has its own DNA?
1. Mitochondria
2. Dictyosome
3. Lysosome
4. Peroxisome
The main arena of various types of activities of a cell is
1. plasma membrane
2. mitochondrion
3. cytoplasm
4. nucleus
The plasma membrane consists mainly of
1. phospholipids embedded in a protein bilayer
2. proteins embedded in a phospholipid bilayer
3. proteins embedded in a polymer of glucose molecules
4. proteins embedded in a carbohydrate bilayer
Stroma in the chloroplasts of higher plants contains
1. light-independent reaction enzymes
2. light-dependent reaction enzymes
3. ribosomes
4. chlorophyll
Middle lamella is mainly composed of
1. hemicellulose
2. muramic acid
3. calcium pectate
4. phosphoglycerides
Plasmodesmata are
1. lignified cemented layers between cells
2. locomotory structures
3. membranes connecting the nucleus with plasmalemma
4. connections between adjacent cells