Question

question 7
1 pts
activities that result in central movement or flow of lymph are called
lymph mechanisms.
lymphokinetic activities.
lymphatic activities.
none of the above.
question 8
1 pts
the _____ postulates that when an antigen enters the body, it selects the clone whose cells are committed to synthesizing its specific antibody and stimulates these cells to proliferate and to thereby produce more antibodies.
cell - mediated immunity theory
complement theory
clonal selection theory
monoclonal selection theory
question 9
1 pts
chemotaxis is the process by which a cell navigates toward the source of the chemotactic factor by way of
detecting and then moving toward higher concentrations of the factor.
detecting and then moving toward lower concentrations of the factor.
hormonal pathways that lead to phagocytosis of the factor.
neural pathways that lead to phagocytosis of the factor.

Explanation:

• Question 7: Lymphokinetic activities refer to the activities that result in the movement or flow of lymph. Lymph mechanisms is a too - broad term. Lymphatic activities is also not specific to the movement aspect.
• Question 8: The clonal selection theory states that when an antigen enters the body, it selects the clone of cells that are committed to synthesizing its specific antibody and stimulates these cells to proliferate. Cell - mediated immunity theory is about T - cell - mediated immune responses. Complement theory is about the complement system in the immune response. Monoclonal selection theory is not a standard term in immunology.
• Question 9: Chemotaxis is the process where a cell detects and moves toward higher concentrations of a chemotactic factor. Moving toward lower concentrations (option 2) is the opposite of chemotaxis. Hormonal and neural pathways leading to phagocytosis (options 3 and 4) are not the mechanism of chemotaxis.

Answer:

Question 7: lymphokinetic activities.
Question 8: clonal selection theory.
Question 9: detecting and then moving toward higher concentrations of the factor.