Which of the following best describes the relationship between the nucleolus and ribosomes within a cell? Nucleoli house ribosomes until they are needed by the cell, after which they exit the nucleus and enter the Golgi apparatus to form proteins.
Proteins and rRNA assemble into ribosome subunits inside the nucleolus, after which the subunits leave the nucleus and combine to form ribosomes.
Ribosomes are manufactured in the cytosol, after which they enter the nucleolus and carry out protein synthesis.
Ribosomes break down the nucleolus so that DNA can enter the cytosol, after which proteins transcribe DNA into mRNA chains.

Hybrid instruments that play sounds that are part sampled and part synthesized are known as:

Mr. j, age 42, is a construction worker in las vegas. he recently noticed that a mole on his face seemed to be getting larger and darker. at first he did not worry because he was in the sun a lot and assumed the change may have been caused by sunburn. after a month, not only was the mole larger and darker, but it appeared to be “bumpy.” his doctor diagnosed a malignant melanoma skin cancer following biopsy of the nevus. mr. j reports pain in his right shin that does not go away when he puts his feet up or sleeps. discussion questions 1. relate mr. j’s skin changes to the warning signs for malignant melanoma. (see malignant melanoma.) 2. discuss the normal progression of this malignancy. what is the significance of the bone pain that mr. j is experiencing? (see malignant melanoma.) 3. discuss the treatment available for this patient and the prognosis for recovery. (see malignant melanoma.)

Forensic scientists think they know the identity of a skeleton. what rule should they use to select a relative whose dna could be used to try to confirm the identity?