Endergonic reactions convert molecules with ____ free energy to molecules with ____ free energy, so they require a net energy input in order to proceed
a. higher; lower
b. lower; higher
c. zero; some
d. some; zero
e. chemical bond; no chemical bond
b
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Enteric bacteria such as Salmonella spp., Shigella spp., and Escherichia spp. most often contaminate and spoil
A) meat. B) fruits. C) grains. D) milk and milk products.
Bone tissue is hard because its matrix contains
1.collagen. 2.iron. 3.several minerals. 4.calcium salts. 5.elastic fibers.
Meselson and Stahl separated DNA from different generations using:a
density gradient centrifugation. b. gel electrophoresis. c. an electron microscope. d. differential radioisotope labeling. e. None of these
Next-generation sequencing takes advantage of the concept of sequencing-by-synthesis. What is sequence-by-synthesis?
A) The use of firefly luciferase and pyrophosphate to report on nucleotide incorporation. B) The use of a multiwell system and microfluidics to detect incorporated nucleotides at each base. C) The use of a single polymerase in a nanopore that reports on a single molecule of synthesized DNA. D) The use of PCR to incorporate ddNTPs, followed by electrophoresis.