In relation to protein production and packaging in a eukaryotic cell, which step occurs a. the er membrane pinches off to encircle the protein. b. in the nucleus dna instructions are copied as rna messages. c. proteins cross the membrane of the rough er and enter the er. d. the vesicle holding the protein travels through the endoplasmic reticulum and out into the cytoplasm.

The answer would be b. in the nucleus DNA instructions are copied as RNA messages. This is called translation. The RNA then takes that information to the ribosome where it is transcribed into amino acids, which will form a polypeptide chain and create a protein! Hope this helped :)

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The open ocean begins at the low-tide mark and extends to the end of the continental shelf

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.