The phage Mu
A) has a circular genome.
B) repairs mutations in the host genome.
C) replicates by transposition.
D) has a circular genome, repairs host genome mutations, and can replicate by transposition.
Answer: C
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A chromosome region may be deleted by all of the following means EXCEPT ____
a. bacteria b. virus c. chemical d. irradiation e. environmental factor
When the amount of water in a soil exceeds what the pore space can hold, the soil is ________
Fill in the blank(s) with correct word
The most widely accepted formal classification of protists assigns them to
A. the kingdom Protista. B. domain Eubacteria C. five different supergroups. D. domain Archaea.
Which statement about the immune system is correct?
a. Memory cells are involved in a primary immune response. b. Dendritic cells were first identified in the nervous system. c. Interferons are specific proteins that block cell replication at the level of mitosis. d. Natural killer cells are involved in both specific and nonspecific immune responses. e. Defensins are one type of protective protein synthesized by T helper cells.