The voltage across a membrane is called the _____
A) chemical gradient
B) membrane potential
C) osmotic potential
D) electrochemical gradient
B
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In what way(s) are mycelia and fruiting bodies similar?
A. Both are composed of hyphae. B. Both grow below ground. C. Both produce spores. D. Both are involved in gathering food. E. All the answer options are correct.
A dye often used for its ease and sensitivity to visualize nucleic acid after agarose gel electrophoresis is
A. nigrosin. B. malachite green. C. gold oxide. D. ethidium bromide.
Approximately when did the earth's crust solidify?
A. 8 billion years ago B. 1 billion years ago C. 4 billion years ago D. 4 million years ago
In adaptive immune responses, which of the
following is NOT capable of acting as an antigen-presenting cell?
a. T cell b. macrophage c. dendritic cell d. B cell e. all of these are capable