A major site for synthesis of lipids is
1. RER
2. SER
3. symplast
4. nucleoplasm
The Golgi complex plays a major role:
1. | in trapping the light and transforming it into chemical energy |
2. | in digesting proteins and carbohydrates |
3. | as energy transferring organelles |
4. | in post translational modification of proteins and glycosylation of lipids |
Ribosomal RNA is actively synthesized in
1. lysosomes
2. nucleolus
3. nucleoplasm
4. ribosomes
What is true about ribosomes?
1. | The prokaryotic ribosomes are 80 S, where S stands for sedimentation coefficient |
2. | These are composed of ribonucleic acid and proteins |
3. | These are found only in eukaryotic cells |
4. | These are self-splicing introns of some RNAs |
Select the correct statement from the following regarding cell membrane.
1. | Na+ and K ions move across cell membrane by passive transport |
2. | Proteins make up 60 to 70% of the cell membrane |
3. | Lipids are arranged in a bilayer with polar heads towards the inner part |
4. | Fluid mosaic model of cell membrane was proposed by Singer and Nicolson |
Important site for formation of glycoproteins and glycolipids is
1. Golgi apparatus
2. plastid
3. Lysosome
4. vacuole
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 |