NURSING EXAM QUESTIONS
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Only polysaccharides are comprised of repeating units of cytosine, adenine, guanine, and thymine.
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Only proteins are formed from amino acids joined by peptide bonds.
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Only polysaccharides can be folded and twisted to very specific shapes.
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Only proteins can be large molecules with thousands of subunits
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Detailed explanation-1: -Proteins and polysaccharides are polymers. These polymers are formed by dehydration synthesis. Which statement correctly identifies a difference in the structure of proteins and polysaccharides? Only polysaccharides are comprised of repeating units of cytosine, adenine, guanine, and thymine.
Detailed explanation-2: -The main difference between proteins and polysaccharides is that proteins are composed of amino acids, while polysaccharides are composed of long chains of sugar molecules.
Detailed explanation-3: -Complex carbohydrates, nucleic acids, and proteins are all examples of polymers that are formed by dehydration synthesis.
Detailed explanation-4: -Hint: Polysaccharides are the molecules having chains of monosaccharide molecules in any class of carbohydrates. Examples of polysaccharides are cellulose, starch, and glycogen. A polypeptide is a molecule that is made from strings of amino acids, an example of the polypeptide is proteins.
Detailed explanation-5: -2) Polymers of polysaccharides, fats, and proteins are all synthesized from monomers by which process? 3) Which of the following best summarizes the relationship between dehydration reactions and hydrolysis? A) Dehydration reactions assemble polymers, and hydrolysis breaks down polymers.