In the reaction A- +B ?A + B-, ____
A. molecule A is oxidized and molecule B is reduced.
B. molecule A is reduced and molecule B is oxidized.
C. molecules A and B are both reduced.
D. molecule A is oxidized and molecule B is unchanged.
E. molecules A and B are both oxidized.
A. molecule A is oxidized and molecule B is reduced.
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The protein required for the establishment and maintenance of lysogeny in cells infected with the temperate bacteriophage lambda is the
A. lambda cos. B. lac repressor. C. lambda repressor. D. lambda Xis and Int proteins.
Spinal nerves:a
contain only sensory neurons. b. contain only motor neurons. c. contain both sensory and motor neurons. d. form ganglia before they enter and exit the medulla. e. are part of the central nervous system.
In contrast to animal cells, yeast or bacterial cell cultures can be grown on fairly simple media without the need to add amino acids or various vitamins and hormones. What is the primary reason for this?
a. Animal cells come from organisms having specialized cell types. b. Animal cells are less capable of transporting small molecules across their membranes. c. Animal cells typically live in association with other cells. d. Animal cells have too many genes to be able to keep track of the biosynthesis of needed metabolites.
Robert Koch sought a "magic bullet" for the treatment of disease caused by bacteria
Indicate whether the statement is true or false