The action of phagocytes considered a nonspecific response because it is a response to any type of harmful substance with out any specificity.
Phagocytosis is a process in which a cell engulf any molecule using its plasma membrane. Phagocytes provide non specific defense mechanism as it the first line of defense of our body. our immune system has to tackle several types of foreign particles, Viruses, Bacteria and harmful proteins. This non specificity of action makes the response quicker than the specific
I think that question is true don’t but not sure
Answer:
d. The cell walls of bacteria are composed of peptidoglycan
Explanation:
Bacterial cell wall is made of peptidoglycan or murein. It is made of sugars and amino acids. Sugar component consists of N-acetylmuramic acid (NAM) and N-acetylglucosamine (NAG) alternating residues. A peptide chain of three to five amino acids is attached to NAM.
Gram positive bacteria have thick cell wall made of many peptidoglycan layers. Whereas gram negative bacteria have a thinner layer. The peptidoglycan cell wall is required for the survival of the bacteria hence it is targeted by many antibiotics like penicillin.
C, scientists have recently developed impressive methods of helping sick sea lions is a statement of opinion since the writer thinks the methods are impressive while others may think otherwise. The other two choices are facts; it states things that the Marine Mammal Center has, such as staff.
