Which of the following would best reflect the general steps of an enzyme-catalyzed reaction?
A. enzyme undergoes conformational changes ? substrates bind to enzyme ? substrates are converted to products ? products are released.
B. substrates bind to enzyme ?substrates are converted to products ? enzyme undergoes conformational changes ? products are released
C. substrates bind to enzyme ? enzyme undergoes conformational changes ? substrates are converted to products ? products are released
D. enzyme undergoes conformational changes ?substrates are converted to products ? substrates bind to enzyme ? products are released
E. substrates bind to enzyme ? substrates are converted to products ? products are released ? enzyme undergoes conformational changes
C. substrates bind to enzyme ? enzyme undergoes conformational changes ? substrates are converted to products ? products are released
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This atom in its unbound state has four valence electrons. These electrons readily form single, double, and even triple bonds among themselves to become stable. This atom is:
A. carbon. B. hydrogen. C. oxygen. D. nitrogen. E. phosphorus.
Clonal selection is an explanation for how _____
A) a single type of stem cell can produce both red blood cells and white blood cells B) V, J, and C gene segments are rearranged C) an antigen can provoke production of high levels of specific antibodies D) HIV (human immunodeficiency virus) can disrupt the immune system E) macrophages can recognize specific T cells and B cells
Which of the following are proteins in the blood that can be activated to lyse bacterial cells, mark other bacterial cells for destruction, and enhance inflammation?
A) albumins B) antibodies C) complement D) interferons E) lymphokines
People who are very underweight often complain of being cold. However, individuals who are overweight are less likely to complain of being cold. Explain why this might be the case
What will be an ideal response?