Blood has been described as an example of a suspension, and soda has been described as a solution. Define these two categories of mixtures and provide different examples of each type. In the examples you provide, explain the molecular properties (approximate size, polarity) of the substances that mix with water.
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Common examples of suspensions include muddy water and a mixture of flour with water. Flour is a large carbohydrate, so it is polar and its particle size is greater than 100 nanometers. Saltwater is a common example of a solution. Sodium and chloride are ions (charged particles) that are single atoms smaller than 1 nanometer.
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Before the mRNA transcribed from a gene can be used to translate into a protein, it must be
A) edited to remove introns. B) edited to remove exons. C) transported into the cytoplasm. D) edited to remove introns and transported into the cytoplasm. E) coated with phospholipids for transport out of the nucleus.
The study of cells and cellular structures is called
A) gross anatomy. B) cytology. C) histology. D) organology. E) microbiology.
Which of the following structure is a nerve system that regulation the GI tract motility?
a. Myenteric plexus b. Mucosa c. Serosa d. Submucosa e. circular muscles
Explain the purpose of a neuronal pool
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