Carla drew a diagram to compare the roles of oxygen and hydrogen in photosynthesis. which label belongs in the area marked y? enters plant as a part of water combines with carbon dioxide is released into air through stomata is stored in leaves for later use

19. scientists use meteorites that hit earth to provide evidence of the composition of earth's interior because they hypothesize that

Environmental impacts on evolution : mastery test

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.