Ritalin, like cocaine and amphetamines, acts by increasing the concentration of which neurotransmitter in neuronal synapses?
A) dopamine
B) serotonin
C) acetylcholine
D) gamma-aminobutyric acid (GABA)
A
Biology & Microbiology
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A(n) ________ is an organism that transfers pathogens from one host to another.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Watson and Crick describe the relationship between ________ as a directional flow of information called the "central dogma".
A) nucleic acids and proteins B) enzymes and proteins C) peptides and polypeptides D) DNA and RNA
Biology & Microbiology
Bacteria belong to the domain
a. Eubacteria. b. Eukarya. c. Archaea. d. Animalia. e. Protista.
Biology & Microbiology
Some aquatic communities are defined by physical features of the abiotic environment rather than by the dominant organisms
Indicate whether the statement is true or false
Biology & Microbiology