What is a functional connection between the nucleolus, nuclear pores and the nuclear membrane
What will be an ideal response?
Answer: subunits of ribosomes are assembled in the nucleolus and pass through the nuclear membrane via the nuclear pores
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Kleckner and coworkers discovered a protein bound to the 5' termini of double-stranded breaks
In their effort to purify and identify this protein, what did they do to amplify the signal (enrich the number of covalently bound complexes), and which protein did they ultimately purify? What will be an ideal response?
Which of the following statements about essential elements is FALSE?
a. An element with only one role in plant metabolism may still be essential. b. An essential element is necessary for normal growth and reproduction. c. Plant seeds in some cases contain enough of an essential element to sustain the adult plant. d. An essential element may occasionally be functionally replaced by another element. e. Some essential elements are required in only trace amounts.
Which general organic compound forms ringed carbon structures?
a. Aromatic hydrocarbons b. Chlorofluorocarbons c. Aliphatic hydrocarbons d. Hydrostatic hydrocarbons
The polyomavirus known as BK may establish latent infection of
A. B lymphocytes. B. liver cells. C. bone marrow stem cells. D. nerve cells. E. kidney cells.