The upcoming discussion will update you about the difference between Pili and Fimbriae. Difference # Pili: 1. They occur only in Gram negative bacteria. 2. The number is 1 -4 per cell. 3. Pili are longer and broader. 4. They help in conjugation. 5. Formation of pili is controlled by F+ or fertility factor. 6. They are tubular structures. Difference [...]
The following points highlight the two main types of reproductive cycle in virus. The types are: 1. Lytic Cycle 2. Lysogenic Cycle. Type # 1. Lytic Cycle (Fig. 2.5): It is the reproductive cycle of virulent phages, e.g., T4 bacteriophage. The phage attaches itself to the host cell (e.g., Escherichia coli) through its tail fibres. The fibres bend and bring [...]
The upcoming discussion will update you about the differences between Bacteria and Cyanobacteria. Difference # Bacteria: 1. The cells are comparatively smaller. 2. The cell wall is 1—2 layered. 3. Plasmodesmata and pores do not occur in cell wall. 4. They exhibit lesser structural elaboration. 5. Bacteria are both autotrophic and heterotrophic. 6. Autotrophic bacteria possess bacteriochlorophyll. 7. Photosynthesis is [...]