Which of the following represents the order of increasingly higher levels of organization of chromatin?
A) nucleosome, 30-nm chromatin fiber, looped domain
B) looped domain, 30-nm chromatin fiber, nucleosome
C) nucleosome, looped domain, 30-nm chromatin fiber
D) 30-nm chromatin fiber, nucleosome, looped domain
A
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Hexokinase is an enzyme that binds specifically to glucose and converts it into glucose 6-phosphate. The activity of hexokinase is suppressed by glucose 6-phosphate, which binds to hexokinase at a location that is distinct from the active site. This is an example of
A. feedback inhibition. B. competitive inhibition. C. cofactor binding. D. allosteric activation.
An absorption spectrum is a graph that shows ________
a. absorption of different wavelengths of light by a pigment b. photosynthetic activity at various wavelengths of light c. wavelengths of visible light only d. wavelengths of various forms of radiation
Which disease is caused by the inhalation of fungal spores?
a. Ringworm b. Athlete's foot c. Histoplasmosis d. Ergotism e. Chestnut blight
The weak chemical attraction between water molecules are ______ bonds, while the stronger chemical bonds between the atoms of each water molecule are _____ bonds.
Fill in the blank(s) with the appropriate word(s).