Fibrin is related to thrombin in the same way that ______ is related to factor X
Fill in the blank(s) with correct word
thrombin
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Saturation occurs when
A. there is so much enzyme present that the reaction rate decreases if more is added. B. all enzymes are busy and further increases in substrate concentration will not increase reaction rate. C. enzymes become fatigued and can no longer catalyze changes in the substrate. D. intramolecular interactions are disrupted in the enzyme, decreasing its efficiency and decreasing reaction rate. E. the substrate is denatured and the enzyme cannot catalyze any changes in its structure.
Choose the correct paired interaction in order for T cell activation to occur.
A) CD8 T cells; Class I MHC proteins B) CD4 T cells; Class I MHC proteins C) CD8 T cells; Class II MHC proteins D) CD6 T cells; Class I MHC proteins E) CD6 T cells; Class II MHC proteins
Which of the following statements regarding the automatic transport ventilator (ATV) is correct?
A) The ATV should not be used to ventilate a patient who is intubated and in cardiac arrest. B) Inadvertent variations in the rate and duration of ventilations often occur when the ATV is used. C) The paramedic can control an apneic patient's minute volume with accuracy when using an ATV. D) Most ATVs are large and cumbersome and are therefore impractical to use in the prehospital setting.
Vitamin A deficiency can lead to blindness
Indicate whether the statement is true or false.