Which of the following are correct statements about the roles of DNA and RNA in a cell? I. DNA contains the genetic instructions used in the development and functioning of living cells.
II. mRNA carries the genetic code from the nucleus to the ribosome for the creation of proteins.
III. TRNA transfers the amino acid to the ribosome for the creation of proteins.
A. I, II, and III
B. II and III only
C. I and III only
D. I and II only

What best explains whether bromine (br) or neon (ne) is more likely to form a covalent bond? bromine forms covalent bonds because it has seven valence electrons, but neon has eight valence electrons and already fulfills the octet rule. bromine forms covalent bonds because it has many electron shells, but neon has only two electron shells and is tightly bound to its electrons. neon forms covalent bonds because it can share its valence electrons, but bromine has seven valence electrons and can gain only one more electron. neon forms covalent bonds because it has only two electron shells, but bromine has many electron shells and will lose electrons in order to fulfill the octet rule.