3. "B-lymphocytesproduce an army of proteins in response to a pathogen in our body". What is the ]name of these proteins?a. Antigenb. Interferonsc. Enzymesd. Antibodies(lyIn a sewage treatment plant, primary sewage treatment includesa. Aeration and biological treatment with microbesb. Physical removal of particles by filtration and sedimentation.c. Removal of pathogens from the organic watersd. Passing the effluent through the settling tanks4.

3. "B-lymphocytesproduce an army of proteins in response to a pathogen

1.	3. "B-lymphocytesproduce an army of proteins in response to a pathogen in our body". What is the ]name of these proteins?a. Antigenb. Interferonsc. Enzymesd. Antibodies(lyIn a sewage treatment plant, primary sewage treatment includesa. Aeration and biological treatment with microbesb. Physical removal of particles by filtration and sedimentation.c. Removal of pathogens from the organic watersd. Passing the effluent through the settling tanks4.
Answer» 3. Answer: d) antigensExplanation:Antibodies are produced by specialized white blood cells called B lymphocytes (or B cells). When an antigen binds to the B-cell surface, it stimulates the B cell to divide and mature into a group of identical cells called a clone. The mature B cells, called plasma cells, secrete millions of antibodies into the bloodstream and lymphatic system4. Answer:d) passing the effluent through the settling tanksExplanation:Primary treatment consists of temporarily holding the sewage in a quiescent basin where heavy solids can settle to the bottom while oil, grease and lighter solids float to the surface. The settled and floating materials are removed and the remaining liquid may be discharged or subjected to secondary treatment.