• 2022-06-04 问题

    For the H-X, the stronger the bond, The stronger the acid.

    For the H-X, the stronger the bond, The stronger the acid.

  • 2022-05-28 问题

    The common name of tetradecanoic acid is A: lauric acid B: myristic acid C: stearic acid D: formic acid

    The common name of tetradecanoic acid is A: lauric acid B: myristic acid C: stearic acid D: formic acid

  • 2022-06-09 问题

    Analog of sulfonamide is (    ). A: folic acid (FA) B: dihydrofolic acid (DHFA) C: tetrahydrofolic acid (THFA)  D: paraaminobenzoic acid (PABA)  E: glutamate

    Analog of sulfonamide is (    ). A: folic acid (FA) B: dihydrofolic acid (DHFA) C: tetrahydrofolic acid (THFA)  D: paraaminobenzoic acid (PABA)  E: glutamate

  • 2022-06-06 问题

    The following metabolites are involved in both the TCA cycle and the glyoxylate cycle except: A: citric acid B: succinate acid C: fumaric acid D: malic acid

    The following metabolites are involved in both the TCA cycle and the glyoxylate cycle except: A: citric acid B: succinate acid C: fumaric acid D: malic acid

  • 2022-06-07 问题

    The important substance for the special flavor of beef is ( ) in beef. A: Benzoic acid B: pyruvate C: fatty acid D: amino acid

    The important substance for the special flavor of beef is ( ) in beef. A: Benzoic acid B: pyruvate C: fatty acid D: amino acid

  • 2022-06-06 问题

    Which of the following statements are TRUE? A: DHA maintains normal vision and promotes brain development of infants B: Linoleic acid and arachidonic acid mainly come from vegetable oil C: Linoleic acid and arachidonic acid regulate blood lipids, participate in phospholipid formation, promote growth, development and pregnancy D: α linolenic acid is the source of EPA and DHA

    Which of the following statements are TRUE? A: DHA maintains normal vision and promotes brain development of infants B: Linoleic acid and arachidonic acid mainly come from vegetable oil C: Linoleic acid and arachidonic acid regulate blood lipids, participate in phospholipid formation, promote growth, development and pregnancy D: α linolenic acid is the source of EPA and DHA

  • 2022-05-30 问题

    According to the scientists, life came from ___________. A: combination of energy and biochemical materials B: combination of nucleic acid and amino molecules C: nucleic acid molecules D: amino acid molecules

    According to the scientists, life came from ___________. A: combination of energy and biochemical materials B: combination of nucleic acid and amino molecules C: nucleic acid molecules D: amino acid molecules

  • 2021-04-14 问题

    In food, the best ratio of saturated fatty acid, monounsaturated fatty acids, polyunsaturated fatty acid should be ( )

    In food, the best ratio of saturated fatty acid, monounsaturated fatty acids, polyunsaturated fatty acid should be ( )

  • 2022-06-19 问题

    The conversion of pyruvate to acetyl coenzyme A and CO2: A: occurs in the cytosol. B: is reversible. C: involves the participation of lipoic acid. D: requires the coenzyme biotin.

    The conversion of pyruvate to acetyl coenzyme A and CO2: A: occurs in the cytosol. B: is reversible. C: involves the participation of lipoic acid. D: requires the coenzyme biotin.

  • 2022-06-03 问题

    Which of the following factors reduce iron absorption in foods? A: Oxalic acid in vegetables B: Phytic acid in grains C: Tannic acid in tea and coffee D: Dietary fiber in plant based food

    Which of the following factors reduce iron absorption in foods? A: Oxalic acid in vegetables B: Phytic acid in grains C: Tannic acid in tea and coffee D: Dietary fiber in plant based food

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