Biology, 14.11.2019 23:31 shelbycg02
Your body contains tens of thousands of different proteins, each with a specific structure and function. the unique shape of each of these diverse proteins is based on several superimposed levels of structure. which of the following statements is true?
a. the primary structure of a protein is the order of nucleic acids in a polypeptide.
b. the 20 amino acids found in proteins differ in the composition of their r groups, which may be either polar or charged.
c. tertiary structure is the overall shape of a polypeptide, which may be stabilized by hydrophobic interactions, hydrogen bonds, ionic bonds, and covalent bonds
d. quaternary structure is only found in proteins that have four identical polypeptide subunits.
e. secondary structures, which include the alpha helix or beta pleated sheet, are held together by interactions between r groups.
Answers: 3
Biology, 21.06.2019 15:00
Asnail, elodea (aquatic plant), or both were added to the tubes and they were stoppered. tubes were placed under a grow light for 24 hours and the results recorded. the test tubes were then covered for 24 hours to produce a dark environment and the results recorded. which statement best explains the change in test tube d from the light setup to the dark setup.
Answers: 3
Biology, 21.06.2019 20:10
4. how does a phospholipid behave in water? the phosphate head does not mix with water; the fatty acid tails do. the phosphate head and the fatty acid tails mix with water. the phosphate head and the fatty acid tails do not mix with water. the phosphate head mixes with water; the fatty acid tails do not.
Answers: 1
Biology, 22.06.2019 01:00
The bacteria found in soil is usually harmful and measures are taken to remove any traces of microorganisms. true or false
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Your body contains tens of thousands of different proteins, each with a specific structure and funct...
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