1. Describe as many specific bacterial toxins as you can,their regulation (if known), mode of action, similarities and/ordissimilarities. 2. Bacteria can bring benefit to its host. Brieftly explain and give a few example how bacteria can be   Positive/beneficial effects on its host host. 3. Describe the 4 types of secretion […]

Mendel crossed pea plants that were PP dd (purple flowers and short stems) with pp DD (white flowers and tall stems), and self-pollinated the F1 to obtain an F2. The two loci assort independently. Purple is dominant to white and tall is dominant to short. What proportion of the purple […]

In malignant hyperthermia, a person develops a life threatening high fever after taking certain types of anesthetic drugs. DNA sequencing of individuals with the disorder showed that in position 33 A nucleotide is substituted by G, in 513 – C by T and in 1001 – T by G in […]

Thiol proteases are a widely distributed group of proteases with a mechanism somewhat similar to that of the serine proteases (the family of enzymes which includes chymotrypsin). The active site of one such protease, papain, contains a Cys and one other amino acid which along with the Cys facilitates catalysis.A. […]