The upcoming discussion will update you about the difference between Artificial and Natural Systems of Classification. Difference # Artificial System: 1. The system is highly useful in the field for quick identification of organisms. 2. Artificial system often utilizes one or two morphological traits. 3. An artificial system may use habit and habitat as criteria for classification. 4. The system [...]
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 [...]