The regulatory systems of the animal body maintain a relatively stable internal condition through a process called ____________________.
A. equilibrium
B. absorption
C. osmoreception
D. homeostasis
E. countercurrent exchange
D. homeostasis
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The botulinum toxin, which causes botulism, reduces the synaptic release of _____
A) acetylcholine B) epinephrine C) endorphin D) nitric oxide E) gamma-aminobutyric acid (GABA)
Which of the following is true concerning a somatic cell mutation?
A. A small fraction of the gametes carry the mutation. B. Half of the gametes carry the mutation. C. All of the gametes carry the mutation. D. Only a small group of cells within the organism is affected by the mutation. E. All cells within the organism are affected by the mutation.
The assignment of names to taxonomic groups is referred to as ________.
A. identification B. systematics C. taxonomy D. nomenclature
Which of the following characteristics is not a property of cells or living things?
A. nucleus B. cell boundary C. responds to stimulus D. ability to replicate E. All of the choices are not fundamental characteristics of living things.