Characterize hemoglobin
What will be an ideal response?
Hemoglobin is carried in red blood cells. Hemoglobin is composed of four polypeptide chains (two alpha and two beta) in combination with heme groups. Each heme group carries one iron atom, which can bind to one oxygen molecule.
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The region at which the RNA polymerase binds is the ________ region.
A. coding B. leader C. promoter D. trailer
Considering the ATP cycle, which of the following would have the most potential energy to perform work for cell activities?
a. ATP b. ADP c. AMP d. adenosine
What is the principal energy storage molecules of plants and animals?
A. sugars. B. proteins. C. lipids. D. vitamins. E. carbohydrates.
A hemoglobin molecule is formed when four independent proteins interact with one another; hemoglobin demonstrates the _____ level of protein organization.
A) primary B) secondary C) tertiary D) quaternary E) pentary