Which of the following statements best describes the end result of bacterial conjugation?
a. The two cells have had an equal exchange of plasmids.
b. One cell has lost a plasmid, while the other cell has gained one.
c. One cell has lost a chromosome, while the other has gained one.
d. One cell has given a copy of a plasmid to another cell and kept one copy for itself.
Ans: d. One cell has given a copy of a plasmid to another cell and kept one copy for itself.
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Bananas are propagated by ____
a. grafting b. adventitious roots c. tissue culture d. treating banana tissues with colchicine e. planting seeds
The figure above represents
a. the algae that were to give rise to plants. b. protists. c. fungi. d. soil bacterium with primitive membrane folds. e. all of these.
Hox genes have been identified in all bilaterally symmetric animal groups
____________________ Indicate whether the statement is true or false.
How does anaerobic respiration differ from aerobic respiration?
a. Anaerobic respiration produces CO2. b. Anaerobic respiration produces ATP. c. Anaerobic respiration involves an electron transport chain. d. Anaerobic respiration utilizes O2 as the terminal electron acceptor. e. Anaerobic respiration utilizes NO3? as the terminal electron acceptor.