15) What componen t of amino acid structure varies among different amino acids?
ID: 140936 • Letter: 1
Question
15) What componen t of amino acid structure varies among different amino acids? A) the long carbon-hydrogen tails of the molecule B) the presence of a central C atom C) the R group, or side chain D) the glycerol molecule that forms the backbone of the amino acid 16) HCH H20 H In the above figure, the chemical reaction shown A) is a hydrolysis reaction C) joins two fatty acids together B) results in a peptide bond D) links two polymers to form a monomer 17) If all of the hydrogen bonds in a protein have been broken, thewill still be intact. A) primary structure C) tertiary structure B) secondary structure D) quaternary structure 18) Which of the following is a major difference between RNA and DNA? A) type of sugar C) type of purines B) type of phosphate D) type of glycosidic bond 19) Which of the following descriptions best fits the class of molecules known as A) a nitrogenous base and a phosphate group B) a nitrogenous base and a sugar C) a nitrogenous base, a phosphate group, and a sugar D) a sugar and a purine or pyrimidine 20) The molecule shown the figure isa C) triacylglycerol B) steroid A) fatty acidExplanation / Answer
Answer 15. Option c
Because of the variation in the R group, there are 20 different amino acids. Glycine is the simplest with only a H atom in the side chain. Tryptophan, phenylalanine, tyrosine are having aromatic side chains.
Answer 16. Option b
A peptide bond is formed between the carboxylic group and the amino group, condensation reaction occurs and 2 monomers are joined together to form a polymer.
Answer 17. Option a
Secondary, tertiary and quaternary structures of proteins contains hydrogen bonds. Peptide bonds are present in the primary stristruc only.
Answer 18. Option a
Sugar is ribose in RNA and deoxyribose in DNA.
Answer 19. Option c
For example if we say about DNA, a nucleotide is formed of a adenine, deoxyribose sugar and a phosphate molecule. dNA is actually a polynucleotidic structure.
Answer 20. Option b
This structure is the base component of the sex hormones like testosterone, estrogen and progesterone.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.