Which panel of the figure contains DNA fragments
that will be incorporated into host cells?
a. A
b. B
c. C
d. D
e. all of these
Answer: c
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Which group of bacteria uses oxygen as a terminal electron acceptor and grows well in ambient air?
a. Aerobes b. Anaerobes c. Capnophiles d. Microaerophiles
The bacteriocins produced by Escherichia coli are called colicins.
Answer the following statement true (T) or false (F)
A vector is an organism that carries
A. mutations. B. toxins. C. spores. D. parasites.
Which of the following best compares meiosis and mitosis?
a. Meiosis produces daughter nuclei that have the same number of chromosomes as the original cell, while mitosis produces daughter nuclei with a different number of chromosomes as the original cell. b. Meiosis produces daughter nuclei that have half the number of chromosomes as the original cell, while mitosis produces daughter nuclei with the same number of chromosomes as the original cell. c. Meiosis produces daughter nuclei that have the same number of chromosomes as the original cell, while mitosis produces daughter nuclei with half the number of chromosomes as the original cell. d. Meiosis and mitosis both produce daughter nuclei with a different number of chromosomes t