A solution with a pH of 4 has ________ the concentration of H+ present compared to a solution with a pH of 5.
A. 2 times
B. 10 times
C. 100 times
D. 1000 times
Answer: B
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RNA viruses require their own supply of certain enzymes because _____
A) host cells rapidly destroy the viruses B) host cells lack enzymes that can replicate the viral genome C) these enzymes translate viral mRNA into proteins D) these enzymes penetrate host cell membranes E) these enzymes cannot be made in host cells
Which of the following chemical reactions will provide most of the energy to the hummingbird so it can beat its wings 40 – 80 times a second?
a. ADP ? AMP + P b. ADP + P ? ATP c. ATP ? ADP + P d. ADP + AMP ? ATP e. AMP + P ? ADPText section: LO2Key Concept: energy, ATP Level: Basic fact retention
Which of the following enzymes and their functions is mismatched
A. Helicase-unwinds the supercoiled DNA B. DNA ligase--joins nucleic acids together C. DNA polymerase-removes bases from DNA D. RNA polymerase-synthesizes primer E. RNA polymerase-synthesizes okazaki fragments
Information from the light receptors undergo its first level of neural processing in the
A) retina. B) optic nerve. C) primary visual cortex. D) hippocampus.