Microbiology Chapter 6

Carbohydrates

Glucose, sucrose and cellulose are examples of

Covalent bonds and peptide bonds (D. Both a and c)

The amino acids in a polypeptide chain are connected by:

7

A heptose contains how many carbon atoms

Proteins

Virtually all enzymes are?

Adenine and guanine

Which of the following are purines ?

Amino acids

Which of the following are the building blocks of protein

Thymine

Which of the following nitrogenous bases is not found in RNA molecule

DNA contains thymine but not uracil, DNA molecules contain deoxyribose, in a double-stranded DNA molecule adenine on one strand will be connected to thymine on the complementary strand by two hydrogen bonds (D. all of the above)

Which of the following statements about DNA is (are)true ?

A nucleotide contains a nitrogenous base,a nucleotide contains a pentose, a nucleotide contains a phosphate group. (All statements are true)

Which of the following statements about nucleotides is (are)true ?

DNA

Which one of the following is not found at the site of protein synthesis?