(A) Tears, sweat, saliva, stomach acid and feces.
(B) Tears, breast milk, sweat, saliva, stomach acid.
(C) Hair, breast milk, sweat, saliva, stomach acid.
(D) Tears and urine.
Category: Microbiology Mcqs
Microbiology Mcqs for NTS, PPSC, FPSC, SPSC, KPPSC, AJKPSC, PMS, NAT, PTS, Educators, Lecturer and all other exams. Here users will find all the Mcqs related to Microbiology. Here users will find mcqs related to study of life and living organisms, living things in an ecosystem, study and structure of organs, study of cells, organisms interaction and their environment, , study of heredity, study of biological molecules, study of DNA and proteins, study of fossils and all microbiology mcqs will be available here.
Physical barriers of immune system are:
(A) Skin and the mucosal membranes
(B) Skin, body temperature and mucosal membranes.
(C) Skin, inflammation and the mucosal membranes.
(D) The bones and the mucosal membranes.
Temperature rising chemicals are?
(A) Thermogens
(B) Pyrogens
(C) Pyogenic
(D) All of these
Kupffer cells are macrophages found in__.
(A) Lung
(B) Bone
(C) Kidney
(D) Liver
Stomach clears out pathogens by?
(A) Secreting HCl
(B) Normal microflora
(C) Phagocytosis
(D) All of these
Which of the following is a distinction between the innate and adaptive immune systems?
(A) Only one system to produce cytokines.
(B) Antigenic specificity in only one system.
(C) Only one system to recognize virally infected cells.
(D) Only one system to mediate cell cytotoxicity.
You enter a dusty room, feel an itch in your nose, and sneeze. This is an example of the operation of which of the following innate immune mechanism?
(A) The low pH of the environment.
(B) The physical barrier produced by hairs.
(C) Phagocytosis by macrophages.
(D) Mucus joint with movement of cilia of lining cells.
Innate immunity involves all EXCEPT?
(A) Anatomical barriers
(B) Phagocytosis
(C) Inflammatory mechanisms
(D) Antibody production