CAPP Biology Test 1 Why is it impossible for humans to digest food that contains cellulose? a - the acidic environment in the human stomach makes it impossible to break the bonds in cellulose b - human digestive enzymes cannot break down the beta - 1,4 glycosidic linkage in cellulose, which requires a special enzyme that is absent in humans c - there is no energy available in fiber d - an inactive form of cellulase in the human digestive system tract renders it undigested and removes it as waste - ✔✔b - Human digestive enzymes cannot break down the beta - 1,4 glycosidic linkage in cellulose, which requires a special enzyme that is absent in humans Which category of lipid would be used to produce sex hormones like estradiol and testosterone fat in humans? a - wax b - steroid c - triglyceride d - phospholipid - ✔✔steroid Which category of liid would be used to store body fat in humans? a - wax b - steroid c - triglyceride d - phospholipid - ✔✔triglyceride Which category of lipid would be used to build plasma membranes in cells? a - wax b - steroid c - triglyceride d - phospholipid - ✔✔phospholipid What categories of amino acids would you expect to find on the surface of a water-soluble protein and which would you expect to find on the interior? a - positively charged and negatively charged on the surface and polar and nonpolar on the interior b - polar and nonpolar on the surface and positively charged and negatively charged on the interior c - polar and charged on the surface and nonpolar on the interior d - nonpolar and charged on the surface and polar on the interior - ✔✔polar and charged amino acids will be found on the interior Where is the linkage made that combines two amino acids in primary protein structure? a - between the R group of one amino acid and the R group of the second b - between the carboxyl group of one and the amino group of the other c - between the 6 carbon of both amino acids d - between the nitrogen atoms of the amino groups in the amino acids - ✔✔b - between the carboxyl group of one and the amino group of the other Which of the following would yield a positive result using a biuret test? a - all of the following options b - a solution of water and lysine amino acid monomers c - a solution of water, lysine amino acid monomers, and arginine amino acid monomers d - a solution of water and
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