14. The pentose phosphate pathway is an important source of ______ and ______,which is an essential precursor for DNA and RNA.(A) ATP; NADH(B) NADH; ATP(C) NADPH; ATP(D) NADH; ribose-5-phosphate(E) NADPH; ribose-5-phosphate

7. DNA double helix structure is stabilized by all of the following EХСЕРТ:(A) the sugar-phosphate backbones are oriented in opposite directions.(B) the glycosidic bonds holding paired bases are directly across the helix from one another.(C) cations such as Mg2+ bind to the anionic phosphates.(D) bases stack together through hydrophobic interactions and van der Waals forces.(E) appropriate base pairing builds a polymer whose external dimensions are uniform.

14. The pentose phosphate pathway is an important source of and ,which is an essential precursor for DNA and RNA.
(A) ATP; NADH
(B) NADH; ATP
(C) NADPH; ATP
(D) NADH; ribose-5-phosphate

(E) NADPH; ribose-5-phosphate

相關試題

相關試卷