Please answer 39-43 39. At Davidson Arabia Mountain, a BIO 110 student scratched

Question

Please answer 39-43 39. At Davidson Arabia Mountain, a BIO 110 student scratched herself on debris while collecting water samples from the lake for a field experiment. If this field experiment is conducted in April during the height of allergy season in Atlanta and the student is taking a powerful antihistamine, which defense may be affected? A. recruitment of antibodies to site of injury B. inflammation C. production of natural killer cells D. stem cell production 40. Consider an aquatic tadpole becoming a terrestrial toad. You would expect to find it changing its form of nitrogenous waste from A. uric acid, urea B. urea, ammonia to E. uric acid, ammonia C. D. ammonia, urea urea, uric acid 41. Which structure houses the largest number of white blood cells to monitor the presence of infectious agents? E. Pancreas A. Aorta B. Liver C. Kidney D. Lymph nodes 42. Which of the following is primarily a non-selective process? A. B. Salt pumping to control osmolality. Reabsorption along the proximal tubule. C. Filtration from the glomerular capillaries D. Secretion along the distal tubule. 43. Clonal selection of B cells activated by antigen exposure leads to production of A. large numbers of neutrophils. B. large quantities of the antigen initially recognized C. vast numbers of B cells with random antigen-recognition receptors D. long-lived red blood cells that can later secrete antibodies for the antigen. E. short-lived plasma cells that secrete antibodies for the antigen

Explanation / Answer

39. B. Inflammation- Antihistamine used to decrease the histamine production from mast cells which is the main cause of inflammation in the body.

40 C Ammonia to urea

41. D. Lymph nodes - contains WBC, neutrophils, esonophils, monocytes etc

42. C. Filtration from glomerular capillaries - Glomerular filtration occurs by diffusion and it is passive non-selective process.

43. E. short-lived plasma cells that secrete antibodies for the antigen.

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