When dna replicates select one: a. transcription factors determine where to begin dna replication. b. the original dna unwinds, and multiple copies of a region are transcribed before the dna closes back up. c. the original dna is not affected and a new double-stranded dna is made from two new strands of dna. d. a cell that was diploid (2n) will now be tetraploid (4n). e. one strand of the original dna ends up in each of the new dna molecules?

Rue or false siblings look simila rbecause they each have some traits of their parents.

The empty trna moves off and picks up another matching amino acid from the cytoplasm in the cell. the anticodon of the trna, with its attached amino acid, pairs to the codon of the mrna, which is attached to a ribosome. this sequence is repeated until the ribosome reaches a stop codon on the mrna, which signals the end of protein synthesis. the ribosome forms a peptide bond between the amino acids, and an amino acid chain begins to form. when a second trna with its specific amino acid pairs to the next codon in sequence, the attached amino acid breaks from the first trna and is bonded to the amino acid of the second trna.

Which statement best describes how the nucleus, the rough endoplasmic reticulum, and ribosomes interact during protein synthesis?