Wild type bread mold can grow in a minimal medium without supplements, while certain mutated strains can only grow in a minimal medium that is supplemented with specific intermediates found in the following metabolic pathway for arginine synthesis. See the figure below for an overview of the arginine biosynthetic pathway.A strain that can grow in minimal medium containing ornithine, citrulline, or arginine, but not in minimal medium alone would have a mutation in the gene that encodes for
McGraw-Hill Education
A. enzyme 1.
B. enzyme 2.
C. enzymes 1, 2, and 3.
D. The strain would be the wild type with no genetic mutations.
E. enzyme 3.
Answer: A
You might also like to view...
Some bacteria exhibit a primitive form of behavior in that they can sense the properties of their environments and use that ability to make adaptive responses. Which of the following are NOT capabilities of any known bacterium?
A. orientation with respect to the Earth's magnetic field B. move to other bacteria and aggregate with them in response to chemical signals C. find nutrients by moving upward in the water column with the aid of flotation devices D. respond to other individual bacteria and transmit DNA via conjugation E. none of the other options presented
Where does the process of independent assortment occur in meiosis?
a. prophase I b. metaphase I c. anaphase I d. telophase I
What contribution did Charles Lyell make?
A) He found some bird specimens on the Galapagos Islands. B) He found some fossils of extinct species. C) He suggested that life evolves through physical changes within the life span of an organism. D) He provided the first evidence that the Earth is much older than was previously thought.
The human body’s “thermostat” is the hypothalamus
____________________ Indicate whether the statement is true or false.