Sodium ions are more concentrated in the extracellular fluid than in the intracellular fluid. This is an example of
A) osmotic equilibrium.
B) electrical disequilibrium.
C) chemical disequilibrium.
D) failed homeostasis.
C) chemical disequilibrium.
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A flexible instrument, passed through a body channels for withdrawal of fluids from or introduction of fluids into the body cavities, is called a:
A) cautery B) hemostat C) cystocentesis D) endotracheal tube E) catheter
This enzyme, produced by the salivary glands, digests carbohydrates
A) amylase B) glucoamylase C) oligosaccharidase D) sucrase
Which of the following organelles has ribosomes bound to its membrane?
A) plasma membrane B) nucleus C) mitochondria D) smooth endoplasmic reticulum E) rough endoplasmic reticulum
The genetic code is
A. the correspondence between a specific amino acid and a specific gene. B. the correspondence between a DNA nucleotide and an RNA nucleotide. C. the correspondence between a gene and a genome. D. the correspondence between a sequence of three DNA nucleotides and a specific amino acid.