Proteins and Nucleic Acids – Flashcards

Which three components are common to all amino acids? an amino group, a carboxyl group, and an R group an amino group, a phosphate group, and an R group a five-carbon sugar, a phosphate group, and a nitrogenous base a five-carbon sugar, an amino group, and a nitrogenous base

How many amino acids are found in living organisms? 2 5 10 20

Which statement is true about BRCA1 and BRCA2 genes? These genes were discovered in 1953. Cancerous tumors often form on these genes. People can be tested for mutations on these genes. Mutations of these genes lead to diabetes.

DNA and RNA share a number of similarities, but they also differ in certain aspects of their structure. Which nitrogenous base is found in RNA but is not found in DNA? uracil adenine thymine cytosine

Which pair of statements best describes an essential amino acid? It is an amino acid that contains peptide bonds. An example is proline. It is an amino acid that contains nitrogen. An example is aspartic acid. It is an amino acid that cannot be made by the body. It must be obtained from eating certain foods. It is an amino acid that can be produced by the body. Vitamin supplements maintain healthy levels.

Which element is found in nucleic acids but not in proteins? carbon hydrogen nitrogen phosphorus