With regard to the lac operon, which of the following is false under conditions of low (or no) glucose?
a) the RNA polymerase cannot transcribe structural genes
b) The repressor is bound to the operator
c) Lactose is not bound to the repressor
d) RNA polymerase can bind to the promoter
e) there is a high amount of glucose in your media
Ans: d) RNA polymerase can bind to the promoter
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Consider a mutation in which the change is from UAC to UAU. Both codons specify the amino acid tyrosine. Which type of point mutation is this?
A) silent mutation B) nonsense mutation C) missense mutation D) frameshift mutation
Digestive wastes of the male Ascaris roundworm exit the body through the
(a) anus. (b) cloaca. (c) mouth. (d) excretory pore.
Henry has the sickle-cell trait. Why might it be a bad idea for him to go on that hiking vacation that is being planned for the high Andes?
What will be an ideal response?
Special creation could be considered a scientific hypothesis, but no one has ever tested it using scientific means
Indicate whether the statement is true or false