Bacterial enzymes that cut DNA molecules at speific nucleotide sequences are called
A.) cDNA enzymes
B.) bacterial polymerases
C.) restriction enzymes
D.) DNA polymerases
Answer: C.) restriction enzymes
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A genetic cross was performed with two pea plants both with green, wrinkled seeds. Of the resulting offspring, 75% had green, wrinkled seeds and 25% had green, smooth seeds (W = wrinkled; w = smooth)
With regard to wrinkled versus smooth seeds, the parental plants must have been ________. Fill in the blank with correct word.
By what process do bacteria reproduce?
A) competitive fusion B) meiosis C) plasmid replication D) binary fission
The process of heating food, usually liquid, just enough to kill microbes without changing the food's basic qualities is termed ________
fermentation pasteurization respiration transformation
For the lac operon in E. coli, under conditions in which glucose is absent and lactose is present, which of the following is true?
a. CRP and cAMP together are bound to the DNA, and LacI is bound to the operator site. b. The lac operon is not transcribed because lactose is present. c. CRP and cAMP together are bound to the DNA, and allolactose is bound to LacI. d. The lac operon is not transcribed due to catabolite repression because glucose is absent.