What are the charophytes?

A. An extinct group of protists that may have given rise to the fungi
B. A type of algae that are the closest living ancestors of the first plants
C. The oldest living plants
D. A type of algae that live symbiotically with fungi


Answer: B

Biology & Microbiology

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To begin transcription, RNA polymerase must bind to a segment of DNA called the ____.  

A.  initiation site B.  primer C.  inducer D.  promoter E.  transcription bubble

Biology & Microbiology

The second edition of Bergey's Manual groups pathogenic species together rather than in phylogenetic groups.

Answer the following statement true (T) or false (F)

Biology & Microbiology

A repressor protein would have which of the following effects on repressible genes with a negative

control mechanism? a. stimulate transcription in the presence of a corepressor b. turn off transcription in the presence of an inducer c. stimulate transcription in the presence of a coactivator d. turn off transcription in the presence of a corepressor e. no response

Biology & Microbiology

When an invasive species alters the community structure it is introduced to, what can the consequence be?

a) extinction of economically important species b) reduced predation on some native species c) increased predation on some native species d) all of the above

Biology & Microbiology