The enzymes that remove acetyl groups from histones in the chromatin are ________.
a) histone acetylases
b) methyl acetyltransferases
c) histone methylases
d) histone deacetylases
e) histone acetyltransferases
Answer: d) histone deacetylases
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Tissue transplanted from one body site on a patient to a different body site on that patient is called a(n) ________.
A. autograft B. isograft C. xenograft D. hypograft E. allograft
Which type of microscope would be used to observe structures on the surface of an individual cell?
a. LM b. TEM c. SEM
Flowers bear seeds that develop from ovules housed in protective chambers called
A) stamens. B) sepals. C) ovaries. D) pistils.
Dibenzoylhydrazines are a category of molecules that have been used as insecticides. They work by blocking ecdysteroid receptors. How does this kill an insect?
A. The insect can no longer excrete nitrogenous wastes. B. The insect cannot molt. C. The chitinous exoskeleton is dissolved. D. The insect can no longer coordinate its movements.