Organisms termed his- are considered prototrophic for histidine
Indicate whether this statement is true or false.
FALSE
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Despite having smaller genomes, the protozoans Paramecium and Trichomonas have significantly more genes than humans
Indicate whether the statement is true or false.
Biofilm bacteria are beneficial in their
A) accumulation and attachment to damaged tissues in the human body. B) involvement in nutrient exchange between microbes and plant roots. C) invasive penetration of cooling towers and storage tanks. D) accumulation on hard surfaces such as teeth.
Pest resistant cotton plants that produce Bt were produced by selective breeding
Indicate whether the statement is true or false
As a general principle of gene regulation through operons, regulatory genes encode
A) trans-acting proteins that interact with cis-acting DNA elements. B) cis-acting proteins that interact with cis-acting DNA elements. C) cis-acting proteins that interact with trans-acting DNA elements. D) trans-acting proteins that interact with trans-acting DNA elements.