The maximum velocity (Vmax) of an enzymatic reaction is an important piece of information regarding how the enzyme works. What series of measurements can be taken in order to infer the maximum velocity of an enzyme-catalyzed reaction?
(a) the rate of substrate consumption after the system reaches equilibrium, for several reactant concentrations
(b) the rate of product consumption shortly after mixing the enzyme and substrate
(c) the rate of substrate consumption at high levels of enzyme concentration
(d) the rate of substrate consumption shortly after mixing the enzyme and substrate, for several substrate concentrations
(d)
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Horizontal gene transfer is less prevalent in eukaryotic species because
A. of the presence of organelles in the cells of eukaryotic species. B. of the multicellularity in eukaryotic species, which is laking in prokaryotic species. C. eukaryotic species reproduce by sexual reproduction. D. of multicellularity and sexual reproduction. E. of the presence of organelles and multicellularity.
Answer questions 94–98 in reference to the five plant tissues
listed below. a. parenchyma b. collenchyma c. sclerenchyma d. xylem e. phloem D 94. Ground tissue of plants, sometimes containing lignin that strengthens the adult plant. E 95. Vascular tissue that conducts and distributes food to plant cells. E 96. Vascular tissue that conducts water and dissolved salts throughout a plant. D 97. Vascular tissue of a plant composed of tracheids and vessel members. D 98. Plant tissue involved in regeneration following a wound.
If you were cast upon a desert island with no fresh water to drink, which of the following would
increase in your bloodstream in an effort to conserve water? a. erythropoietin b. oxytocin c. insulin d. antidiuretic hormone e. glucose
Genetic engineering methods have been used to produce vaccines.
Answer the following statement true (T) or false (F)