What factors cause oxygen to be released from hemoglobin? Select all correct choices
A. a change in the acidity or pH of blood
B. an increase in CO2 in the bloodstream
C. the formation of lactic acid by muscles
D. an increase in aerobic respiration
A,B,C,D
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Which of the following lack a “true” coelom?
a. flatworms b. annelids c. roundworms d. flatworms and roundworms e. flatworms and annelids
This class of antibodies is first to appear after infection, activates complement, and causes cells to clump, encouraging phagocytosis.
A. IgG B. IgM C. IgE D. IgD
Cytokinins are plant hormones that usually affect cell
A. turgor pressure. B. wall expansion. C. elongation. D. division. E. growth.
Please match the virulence factor of Streptococcus pyogenes to its description.
Streptokinase A) Surface antigen that serves as the basis for alphabetical grouping; protects bacterium from lysozyme B) Toxin that causes beta-hemolysis on blood agar and injures cells of the host C) Enzyme that plays a role in invasion by leading to the digestion of fibrin clots D) Projecting surface antigen that facilitates adherence and resists phagocytosis E) Chemical surface layer that prevents an immune response by the host F) Enzyme that promotes invasion into tissues by breaking down the binding substance in connective tissues