Lactose operon genes are examples of: a) housekeeping genes
b) genes that are transcribed at a constant rate
c) genes with a GC-rich promoter
d) none of the above

Match the digestive enzymes to the macro molecules they to digest. down fats into glycerol and fatty acids down carbohydrates into simple sugars down nucleic acids into nitrogenous bases and simple sugars down proteins into amino acids

The gulf stream and north atlantic current modify the climate of northwestern europe by making the climatea) warmer and drierb) warmer and more humidc) cooler and drierd) cooler and more humid

All cells need water to survive. in order to maintain the necessary amounts, water can flow across the cell membrane from areas of higher concentration to areas of lower concentration. what is this flow of water called? a) active transport b) allocation c) diffusion d) osmosis