The body's first line of defence against shifts in pH is its acid-base buffer systems.
What is acid-base buffer system?
- The proper balance between the acids and bases in the body's extracellular fluid is crucial for the normal physiology of the body and for cellular metabolism.
- The first lines of defence are immediate, consisting of the various chemical buffers which minimize pH changes that would otherwise occur in their absence.
- The pH of the intracellular fluid and the extracellular fluid need to be maintained at a constant level.
- Proteins are denatured i.e. their 3D structure is disrupted, causing enzymes and ion channels to malfunction.
- An acid–base imbalance is known as acidaemia when the pH is acidic and alkalaemia when the pH is alkaline.
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The term pop art is an abbreviation for popular art. This movement is distinguished by
D.) Elements of contemporary culture, ordinary objects and everyday items.
Los ricos vivían en una casa unifamiliar<span> que se llamaba </span>domus<span>. Los más humildes habitaban en casas de pisos, llamadas </span>insulae<span> (islas).</span>
Answer: Polyphony
Explanation: Polyphony is when multiple melodic lines are simultaneously playing.
1) Gershwin's Porgy and Bess is considered a musical and a D) folk opera. <span>Porgy and Bess is a </span>folk tale which was taken as a basis of the opera. The first time Porgy and Bess was performed in Boston on September, then <span>it moved to Broadway in New York City which was a great success for composer and the troupe.
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2) "The question" in Charles Ives's The Unanswered Question is represented by B) the program. The composer gives<span> a narrative as in </span>program music, that is a type of music<span> that attempts to musically render an extra-musical </span>narrative. Even though Ives employed very creative technique, The Unanswered question was not popular and <span>was not performed until 1946.
</span><span>3) The American composer that was not influenced by jazz is A) Aaron Copland. The rest of composers were greatly influenced by jazz, which can be understood at the very beginning of any of their works. But Copland was different, he came up with his self-made style after three years of studying with Boulanger whose eclectic approach to music he found inspiring.
4) A fuging tune, by definition, includes A) imitative polyphony. A fugue is a contrapuntal compositional technique that is enacted in two or more voices, built on a musical theme that is introduced at the beginning in imitation. In music, imitation means repetition at different pitches. Fuging tune is special because it is tend to recur frequently throughout the composition.
5) The most important American composer of tone poems was <span>Edward MacDowell B) </span>Edward MacDowell. Tone poem, which is also known as symphonic poem, is a piece of orchestral music that illustrates the content of non-musical source. It was brought into the world by composer Franz Liszt and popularized in many works of Edward MacDowell, in his <span>second piano concerto.</span></span>
