Which of the following is a function of the lymphatic system that assists the cardiovascular system?
A) production of all blood cells
B) RETURNING EXCESS TISSUE FLUID INTO CIRCULATION
C) distribution of nutrients.
Answer: B) RETURNING EXCESS TISSUE FLUID INTO CIRCULATION
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The serum bactericidal test (SBT) involves:
a. serial dilutions of antimicrobials in ca-tion-adjusted Mueller-Hinton broth. b. 99.9% reduction in CFU/mL, compared with the organism concentration in the original inoculum. c. using the patient's serum to detect its bacteriostatic and bactericidal activity. d. subculturing the tubes of a completed broth dilution test showing no visible growth.
Which disease that affects respiratory function is caused by an infectious organism?
A. lung cancer B. emphysema C. asthma D. cystic fibrosis E. pneumonia
Which of the following is the correct operational
sequence in the molecular mechanisms of cell-to-cell communication? I. signal transduction II. receptor activation III. functional response a. I >>> II >>> III b. II >>> I >>> III c. III >>> I >>> II d. II >>> III >>> I e. I >>> III >>> II
In natural selection, __________ determines which phenotypes are successful
A) chance B) the environment C) sample size D) genetic drift E) human intervention