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
D
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Fermentation is a process that proceeds without oxygen. Such a process can be described as ________.
Fill in the blank(s) with the appropriate word(s).
What primary structures package cellular secretions for export from the cell?
a. Golgi bodies b. ribosomes c. mitochondria d. lysosomes e. endoplasmic reticula
Stratospheric ozone shields the planet from biologically harmful ultraviolet radiation
Indicate whether the statement is true or false
Differentiation is the process in which cells _____________.
A. mature into larger cells B. change from one type of muscle to another C. change to repair injuries D. turn on all the genomic genes E. express different subsets of their genes during development