If there is is large amount of lactose present, how does bacteria respond?

a. the gene for beta-galactosidase turns on.
b. the gene for beta-galactosidase turns off.
c. beta-galactosidase production increases.
d. lactose is produced.

How do living things obtain phosphorus

Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?

Research question: why are the carrots that grew on the left side of the garden larger than the carrots that grew on the right side of the garden? which hypothesis is based on this research question? a comparison of people with gardens to people without gardens will show who is likely to live longer. b. carrots are thought to be good for your eyesight and should be eaten regularly. c. carrots that are provided lots of sunlight grow to a larger size than carrots grown in the shade. d. eating fresh vegetables every day is a healthy thing to do.