HA trimers are responsible for the attachment of the virus to host cells, binding to the sialic acid. 

NA is an enzyme that cleaves N-acetyl neuraminic (sialic) acid

Within the envelope, consists of eight different strands of single- stranded RNA (ssRNA) associated with protein and RNA polymerase. 

TLS Online TPP Program

#Id: 6902

#Unit 8. Inheritance Biology

Chromosome mutation - Difference from the wild type in the number or structure. 

TLS Online TPP Program

#Id: 9522

#Unit 6. System Physiology – Plant

The bacterial blight pathogen of rice (Oryza sativa), Xanthomonas oryzae pv. oryzae, secretes a highly conserved sulfated peptide called Ax21, which mediates quorum sensing by controlling Xanthomonas motility, biofilm formation, and virulence.

TLS Online TPP Program

#Id: 7268

#Unit 6. System Physiology – Plant

One way in which rubisco is activated involves the formation of a carbamate– Mg2+ complex on the ε-amino group of a lysine within the active site of the enzyme. Two protons are released. Activation is enhanced by the increase in Mg2+ concentration and higher pH (low H+ concentration) that result from illumination. The CO2 involved in the carbamate–Mg2+ reaction is not the same as the CO2 involved in the carboxylation of ribulose-1,5-bisphosphate.

TLS Online TPP Program

#Id: 9706

#Unit 4. Cell Communication and Cell Signaling

Ligand binding to either of the two yeast pheromone GPCRs triggers the exchange of GTP for GDP on the Gα subunit and dissociation of Gα∙GTP from the Gβγ complex.

TLS Online TPP Program

#Id: 9237

#Unit 6. System Physiology – Plant

Mesophyll cell (peripheral region)= Primary carboxylation and regeneration

Bundle sheath cell (internal region)= Decarboxylation and Secondary carboxylation