A(n) ________ is a bacterial virus which is integrated into the host cell DNA.
A. lytic phage
B. prophage
C. plasmid
D. transposon
E. insertion phage
Answer: B
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Antibody diversity is a consequence of
A) the huge number of antibody genes. B) shuffling of antibody genes into different combinations during B cell development. C) differential regulation of antibody gene expression under different circumstances. D) the many types of viruses that exist in nature.
Simple, single-celled organisms that lack a nucleus are referred to as which of the following?
a. bacteria b. fungi c. prokaryote d. eukaryote
_____ can lead to resource partitioning
a. Mutualism c. Commensalism b. Parasitism d. Interspecific competition
ADH makes the walls of the collecting duct more permeable to water. Indicate whether the statement is true or false