Which step is catalyzed by the enzyme responsible for the Met 3 mutant?
A) homoserine ? cysteine
B) cysteine ? cystathionine
C) cystathionine ? homocysteine
D) homocysteine ? methionine
E) methionine ? homoserine
B
You might also like to view...
What happens when phospholipids are placed in an aqueous solution?
a. They disperse and form polar bonds with other organic molecules present in the solution. b. They move to the water's surface and form a single-layered membrane between the water and the atmosphere. c. They repel one another. d. They spontaneously form bilayers. e. The hydrophobic tales force the phospholipids to form "beads" at the surface, much like what you see when vegetable oil is added to water
What characterizes terrestrial tetrapods?
A. Lives on land, has four limbs B. Lives in the water, has four limbs C. Lives on land, has four cranial nerves D. Lives on land, has four sets of chromosomes
The genome of eukaryotes consists of genes derived from
a. archaebacteria. b. eubacteria. c. both archaebacteria and eubacteria. d. neither archaebacteria or eubacteria.
Following genetic recombination, ____
a. the bacterial cell is unable to divide b. the bacterial cell is no longer able to replicate its DNA c. the bacterial cell is a partial haploid d. any remnants of DNA that did not contribute to the genetic recombination form plasmids e. all progeny of the recombinant cell contain the new gene combination