Question

QUESTION 1 1 points A person that is first exposed to a new cold virus would not feel better for about 7 days because: The inflammatory response that amplifies the immune response is slow-acting. It takes about one week for pro-inflammatory cytokines to call neutrophils to the site of infection. c. It takes up to two weeks to stimulate memory B and T cells. There are no memory cells to be called upon, and therefore the primary d. immune response is slower. QUESTION 2 1 points Mothers who are vaccinated against the flu while pregnant give birth to infants who are less likely to become ill with the flu for up to 3 months. This effect is increased if the mother feeds her infant with breast milk. This is an example of: a. Active immunity Genetic inheritance b. c. Passive immunity d. Innate immunity QUESTION 3

Answer 1

1. Option b is correct answer

The person who affected by a new cold virus doesn't feel good for 7 days because it takes a week for pro cytokinins to call neuterophil to site of action.

2. Option c is correct answer

Mother who is vaccinated for flu give birth to child who is is less likely to feel sick with flu and effect is increased if mother gives milk is an example of passive immunity

18.option e is correct answer

Collecting ducts

Collecting ducts carry urine to renal pelvis. They concentrate urine and pass to renal pelvis.

19. Option d is the correct answer

Ascending loop of Henle

Ascending loop of Henle have epithelium which is impereable to water. But helps in transport of ions. It lacks aquaporin protein and are impermeable to water.

20. Option b is correct answer

Processing filterate in proximal and distal tubules help in maintaining ion concentration of body fluids.

They help in maintaining pH of body fluids.