Ascientists uses radioactive nitrogen to label the nitrogenous bases of the dna of a cell. then the dna is allowed to replicate, and the new strands take
up non-radioactive bases. do one, both, or neither of the daughter cells have radioactive dna? explain why.

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z

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.