Which two molecules are oxidized during the electron transport system?
What will be an ideal response?
NADH and FADH2
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Four of the five answers listed below are related to DNA replication. Select the EXCEPTION.
a. base pairing b. hydrogen bonding c. semiconservative d. DNA ligase e. glycolysis
Which of the following is true of plant cells?
A) Plant cells may contain chloroplasts. B) Plant cells are always much larger than animal cells. C) Chromosomes are found only in plant cells. D) Only plant cells have a cell membrane. E) The plant cell has no cell wall.
Which of the following causes the rapid change of membrane polarity during an action potential?
(A) Diffusion of neurotransmitters such as acetylcholine (B) Diffusion of positively charged ions across the cell membrane (C) Release of electrons from inside the cell (D) Release of protons from inside the cell
Earth formed___years ago, and life first appeared about___years ago
Fill in the blank(s) with the appropriate word(s).