1 El sistema esquelético se compone de
huesos, que son la parte más resistente
del cuerpo humano. ¿Cuál
característica explica MEJOR por qué
los huesos facilitan los movimientos
del cuerpo humano?
A Son ligeros.
B Son pequeños.
C Tienen articulaciones.
D Tienen células flexibles.

Glutamic acid: hydrophilic or hydrophobic? positive, negative, or neutral? valine: hydrophilic or hydrophobic? positive, negative, or neutral?

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment

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.