A(n) ________ lives on or within the host organism for some period of its life
Fill in the blank(s) with correct word
parasite
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Agents that are static and, therefore, do not kill infecting microorganisms are not useful as chemotherapeutic agents.
Answer the following statement true (T) or false (F)
Antibiotics that disrupt or halt cell wall biosynthesis are actually ineffective at harming growth of mycoplasmas
Indicate whether the statement is true or false.
Which of the following statements about bird respiration is false?
A. Air flowing through the air channels in the lungs moves in the opposite direction of blood flowing through the blood capillaries in the lungs. B. Oxygen is exchanged between the air and the bloodstream in the lungs, but not in the air sacs. C. The unidirectional flow of air through a bird's lungs maintains a larger concentration gradient for diffusion than can be obtained through tidal breathing. D. Bird lungs receive fresh air during both inhalation and exhalation. E. It takes two ventilation cycles for a single breath of air to move through a bird's respiratory system.
Species of the genus Thiobacillus
A. oxidize inorganic sulfur compounds and produce ATP. B. are ubiquitous in soil, freshwater, and marine environments. C. produce acids that leach metals out of ore. D. All of the choices are correct.