Questions and Answers
The monomers of a polysaccharide are called amino acids.
False
An emulsion is a mixture of two liquids that separate from each other on standing.
True
Two molecules with the same atoms arranged in a different order are called isotopes.
False
If a pair of shared electrons are more attracted to one nucleus than to the other, they form a polar covalent bond.
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Amino acids are joined by a unique type of bond called a peptide bond.
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A saturated fat is defined as a fat to which no more carbon can be added.
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Organic compounds get their unique chemical characteristics more from their functional groups than from their carbon backbones.
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The higher the temperature is, the faster an enzyme works.
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Two percent sucrose and 2% sodium bicarbonate have the same number of molecules per liter of solution.
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A solution of pH 8 has one-tenth the hydrogen ion concentration of a solution with pH 7.
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Study Notes
Flashcard Summary
- Monomers of polysaccharides are monosaccharides, not amino acids.
- An emulsion is a mixture of two immiscible liquids that do not blend when allowed to stand.
- Molecules with identical atoms but different arrangements are called isomers, not isotopes.
- A polar covalent bond forms when a pair of shared electrons is attracted more towards one nucleus than another.
- Amino acids are linked together by peptide bonds, which are essential for protein formation.
- Saturated fats are characterized by having no more hydrogen atoms that can be added, not carbon.
- The distinctive chemical properties of organic compounds are primarily derived from their functional groups, rather than their carbon structures.
- Enzyme activity typically increases with temperature, but extreme heat can lead to denaturation, halting their function.
- Comparing solutions, 2% sucrose and 2% sodium bicarbonate contain different amounts of molecules per liter due to differing molecular weights.
- A solution with a pH of 8 has a hydrogen ion concentration that is one-tenth that of a solution with a pH of 7, illustrating the logarithmic nature of the pH scale.
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Description
Test your knowledge of key concepts from Biology Chapter 2 with this true or false quiz. Each question challenges your understanding of important definitions and terms related to polysaccharides and molecular structures. See how well you grasp the material!
