________ reactions are used to replace TCA cycle intermediates that have been used to provide carbon skeletons for amino acid biosynthesis.
A. Catabolic
B. Anaplerotic
C. Anabolic
D. Amphibolic
Answer: B
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The light-stimulated proton pump of Halobacterium salinarum indirectly functions to pump sodium out of the cell by the activity of a Na+/H+ antiport system
Indicate whether the statement is true or false.
To which class of neurotransmitters does dopamine belong?
a. acetylcholine b. monoamines c. amino acids d. neuropeptides e. gaseous neurotransmitters
What is the name for an association of fish that exhibit behaviors for social reasons?
a. Synchronization b. Shoaling c. Catadromous d. Anadromous
If 16% of the nucleotides in one strand of a DNA molecule contain the base G, what percent of the nucleotides on the complementary strand will also contain the base G?
A. 8% B. 34% C. 16% D. 32% E. It is impossible to determine from the information given.