Some bacteria are capable of obtaining DNA from the environment, which is problematic with antibiotic resistance genes. When a competent cell takes in DNA from outside the cell, it is termed

A) incorporation.
B) transformation.
C) encapsulation.
D) transduction.


Ans: B) transformation.

Biology & Microbiology

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DNA evidence suggests that early farmers from Turkey, Syria, Iraq, and other Near Eastern cultures migrated to ________ and interbred with hunter-gatherers there.

A) Europe B) Africa C) North America D) Siberia

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The two most important factors that appear to have been involved in past mass extinctions are:a

fire and climatic factors. b. disease and parasites. c. glaciers and earthquakes. d. environmental and biological factors. e. plate tectonics and climatic factors

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The tissue containing nerves, blood, and lymph vessels in teeth is known as the:a

dentin. b. cementum. c. enamel. d. tooth socket. e. pulp cavity

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Which is the largest, most diverse group of arthropods?

a. crustaceans b. centipedes c. arachnids d. insects e. millipedes

Biology & Microbiology