The operon segment composed of the gene that codes for a protein repressor is called the ________.
A. regulator
B. structural locus
C. operator
D. promoter
Answer: A
Biology & Microbiology
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Discuss the three most important factors for successful reproduction
What will be an ideal response?
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Accessory pigments of _____ allow them to carry out photosynthesis at greater depths than other algae
a. euglenoids c. brown algae b. green algae d. red algae
Biology & Microbiology
Changes in chromosome number are usually the result of
A. genetic displacement. B. trisomy. C. crossing over. D. nondisjunction. E. disjunction.
Biology & Microbiology
You are part of a team that discovers a new nitrogen-fixing bacteria in symbiosis with a plant. As you study this new bacteria, you discover that it is photosynthetic. This bacteria is likely to be
A. cyanobacteria. B. proteobacteria. C. actinobacteria. D. none of the above.
Biology & Microbiology