The amino acid lysine is shown below. What functional group must be removed in order to produce cadaverine (1,5-pentanediamine)?
A) One amino group must be removed and replaced with a hydrogen.
B) The carboxyl group must be removed and replaced with a hydrogen.
C) The hydrogen (shown) must be removed and replaced with an amino (NH2) group.
D) Lysine is 1, 5-pentanediamine. Nothing has to be removed.
Answer: B
You might also like to view...
Based on the number of galaxies visible in the Hubble Deep Field (Figure 20.1 in your textbook), the estimated number of galaxies in our observable universe is
A) about 50,000. B) about 100 million. C) about 100 billion. D) an infinite number.
The tree of life
A) traces back the evolution of all mammals to a common ancestor B) classifies organisms according to their physical appearance C) illustrates the biochemical and genetic relationships between the different domains of life D) is a name for the first organism from which all life originated
If a star with an absolute magnitude of ?5 has an apparent magnitude of +5, then its distance is
a. 1 pc. b. 10 pc. c. 100 pc. d. 1000 pc. e. 10,000 pc.
The pink color of the chromosphere arises from the emission of light from
A) hydrogen atoms. B) helium atoms. C) carbon atoms. D) beryllium atoms.