During maturation of a eukaryotic mRNA, sequences that are spliced out are
A) extremes.
B) exons.
C) inclusions.
D) introns.
E) spliceosomes.
D) introns.
During maturation of a eukaryotic mRNA, sequences that are spliced out are introns.
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Which is the least successful method of birth control?
a. withdrawal method b. a condom c. a diaphragm d. tubal ligation e. oral contraceptives
Why does extended hypoglycemia (low blood sugar) lead to confusion and difficulty thinking?
A. Glucose provides energy for brain cells. B. Unregulated pH of body fluids causes these symptoms. C. Glucose is major source of energy for non-nervous system cells. D. Glucose is required for chemical reactions in the body.
Transcription factors attach to
A) DNA. B) the nuclear envelope. C) plasma membrane receptors. D) mRNA.
Constriction where sister chromatids of a chromosome are held together.
What will be an ideal response?