Q. No.
Which one of the following does not differ in E.coli and Chlamydomonas?
1. Ribosomes
2. Chromosomal organization
3. Cell wall
4. Cell membrane
What is true about ribosomes?
| 1. | The prokaryotic ribosomes are 80S, 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 membranes 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 the cell membrane was proposed by Singer and Nicolson |
Which one of the following structures between two adjacent cells is an effective transport pathway?
1. Plasmodesmata
2. Plastoquinones
3. Endoplasmic reticulum
4. Plasmalemma
1. Golgi apparatus
2. plastid
3. lysosome
4. vacuole
1. nucleus
2. ribosomes
3. cell wall
4. plasma membrane
1. mitochondria
2. chromoplast
3. ribosomes
4. chloroplast
Membrane-bound organelles are absent in:
1. Saccharomyces
2. Streptococcus
3. Chlamydomonas
4. Plasmodium
Which one of the following has its own DNA?
1. Mitochondria
2. Dictyosome
3. Lysosome
4. Peroxisome
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