Please explain the reasoning behind the correct answer.
Answer is d).
Amino acid contain Amino and carboxy groups. Both of these groups are present on same alpha carbon which is asymmetric and have configuration L. Nature contain L-amino acid in majority.
All of the amino acids that are used to synthesize human proteins (with the exception of...
Which of the following are true of the 20 common amino acids? Pick ALL that apply. A. They are polymers used to make proteins. B. They are β-amino acids. C. They all have the same carboxylic acid group. D. They all have the same R-group. E. They all have the same amino group.
“Amino acids used in making a polypeptide have an amino group and carboxyl group, and these groups can be present on any carbon atoms.” Is that a correct statement? Why so? What is the basis for classification of amino acids to non-polar (but not aromatic), polar, and two oppositely charged (at physiological pH) amino acids? Provide examples with their exact name, three letter and single letter codes.
All amino acids in proteins are Select one: O a. alpha-amino acid O b. (R)-amino acids c. acidic O d chiral
All amino acids in proteins are Select one: O a. (R)-amino acids b. chiral c. alpha-amino acid O 0 d. acidic
2. what is the configuration of almost all naturally occurring amino acids at the a (alpha) carbon 3. why is an alpha amino acid such as alanine more acidic than a regular carboxyllic acid 4. strecker synthesis Formation dl-phenylalanine 5. outline the steps to synthesize the simple dipeptide AL (think about two amino acids that begin with an A and an L) 6. give the structure and name of the nucleosides in dna and rna 7. give the structure of...
Question 1 (1 point) Amino acids used in proteins generally are L-amino acids neither L nor D amino acids both L and D amino acids D-amino acids Question 2 (1 point) o be Polar R groups, along with acidic and basic R groups are said Question 2 (1 point) Polar R groups, along with acidic and basic R groups, are said to be.because the are attracted to water molecules. hydrophobic hydrophilic ionized unreactive Question 3 (1 point) Which of the...
Which of the following is an acceptable term/name used for a molecule in which two carbons of glycerol are attached to fatty acid chains, and the third carbon of glycerol is attached to a phosphate group? C sphingomyelin C phospholipid C phosphosteroid C triacylglycerol A nucleotide is different from a nucleoside because a nucleotide has C a ribose sugar. C a deoxyribose sugar. C at least one phosphate group. nitrogen-containing base. Most types of molecules in the cell have asymmetric...
1. Which of the following is not true of amino acids? a) Your intestines do not absorb proteins, only the amino acids released by hydrolysis of these proteins. b) A normal, natural, unprocessed diet does not contain proteins, only the free amino acids. c) Amino acids are NEEDED for making your proteins. d) Amino acids are NEEDED for making the nitrogenous bases of your nucleic acids. e) In you, amino acids are not stored as protein. 2. Which of the...
Identify ALL of the following that are function of proteins/amino acids in the body: required for absorption of water-soluble nutrients; tunnels used for absorption are proteins travel through the GI tract undigested and "feed" the bacterial flora in your large intestine immunity; for example, antibodies are proteins the first choice of energy for most cells omega-3s are essential amino acids that reduce inflammation part of phospholipid structure enzymes are proteins keeping fluid...
single letter abbreviation of all amino acids that correspond 4. Amino acids. The side chains of amino acids have a wide spectrum of chemical and physical properties. In each sp. provided below, write the single-letter abbreviations of all amino acids that match the description positively charged side chains at pH 7.4 negatively charged side chains at pH 7.4 negatively charged side chains at pH 12 achiral contains two chiral carbons side chain restricts the rotation of main chain contains carboxamide...