A histidine, methionine auxotroph _________
A. can synthesize only histidine and methionine
B. can only use histidine and methionine as nutrition sources
C. cannot synthesize histidine and methionine
D. is killed by histidine and methionine
E. lacks proteins with histidine or methionine
C
You might also like to view...
A C. elegans with a heterochronic mutation in lin-14 will lay eggs normally
Indicate whether the statement is true or false
Ti plasmids in the species Agrobacterium tumefaciens
A. carries the genes needed for formation of bacteroids. B. is required for nitrogen fixation. C. causes the formation of tumors. D. carries the genes needed for root nodule development.
A variable trait in corn is the presence or absence of knobs at particular sites on some chromosomes. The allele present on each chromosome determines whether or not that chromosome has a knob. Suppose that one member of each of two pairs of homologs in a corn plant has a knob. If this plant is crossed with a knobless plant, what percentage of the offspring is expected to have only knobless chromosomes?
A) 100% B) 75% C) 50% D) 25% E) 0%
Which of the following should make you the MOST suspicious of a terrorist attack or an incident involving a weapon of mass destruction?
A) You respond to a temple, church, or mosque for a patient who was assaulted. B) You receive a call involving multiple patients with similar signs and symptoms. C) A public building is evacuated when an employee notices the smell of natural gas. D) A government employee presents with an acute onset of a cough and dyspnea.