Which of the following biological molecules are composed of monomer units containing a sugar, a phosphate group, and a nitrogen-containing base?
A) Proteins B) Lipids C) Nucleic acids D) Carbohydrates
C
You might also like to view...
Which of the following statements about photorespiration is INCORRECT?
A. Photorespiration tends to occur under dry and hot conditions. B. It utilizes oxygen to produce a 3-carbon sugar precursor. C. It liberates CO2. D. It occurs in C3 plants. E. It utilizes the enzyme PEP carboxylase rather than Rubisco to produce 3-phosphoglycerate.
What is a family tree that is used to follow human matings that have already occurred?
A) test cross B) karyotype C) sex-linked record D) pedigree
The ______ period is sometimes referred to as the age of fish
a. cambrian b. permian c. devonian d. ediacaran e. cretaceous
Which nitrogenous bases are considered purines?
a. thymine and cytosine b. adenine and cytosine c. thymine and adenine d. adenine and guanine