When E. coli is grown on glucose, and there is no lactose available
A) lactose molecules bind to the lac repressor.
B) the lac repressor binds to the operator of the lac operon.
C) RNA polymerase binds to the promoter of the lac operon.
D) the lac genes are transcribed into messenger RNA.

The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?

How does this experiment explain why it is often milder in areas such as coastal maryland while areas such as kansas or iowa have more extremes in temperature

The bacteria found in soil is usually harmful and measures are taken to remove any traces of microorganisms. true or false