Which of the following statements is true for the class of biological molecules

Question

Which of the following statements is true for the class of biological molecules known as lipids? A) They are insoluble in water. B) They are made from glycerol, fatty acids, and phosphate. C) They contain less energy than proteins and carbohydrates. D) They are made by dehydration reactions. E) They contain nitrogen What is the term used for a protein molecule that assists in the proper folding of other proteins? A) tertiary protein B) chaperonin C) enzyme protein D) renaturing protein E) denaturing protein There are 20 different amino acids. What makes one amino acid different from another? A) different side chains (R groups) attached to a carboxyl carbon B) different side chains (R groups) attached to the amino groups C) different side chains (R groups) attached to an alpha carbon D) different structural and optical isomers E) different asymmetric carbons The bonding of two amino acid molecules to form a larger molecule requires which of the following? A) removal of a water molecule B) addition of a water molecule C) formation of a glycosidic bond D) formation of a hydrogen bond E) both removal of a water molecule and formation of a hydrogen bond What aspects of protein structure are stabilized or assisted by hydrogen bonds? A) primary structure B) secondary structure C) tertiary structure D) quaternary structure E) secondary, tertiary, and quaternary structures, but not primary structure Which bonds are created during the formation of the primary structure of a protein? A) peptide bonds B) hydrogen bonds C) disulfide bonds D) phosphodiester bonds E) peptide bonds, hydrogen bonds, and disulfide bonds

Explanation / Answer

question 32

true statements are

1 lipids are insoluble in water.

as they are hydrophobic in nature.

2 they are made from fatty acids , glycerol and phosphorus.

3 they are made by dehydrations reactions.

for producing a phospholipids involves connecting each of the fatty acids and phosphate group to the glycerol backbone through dehydration synthesis.

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