Lactase breaks down lactose, the sugar in milk which is made of several parts. What does lactose break down into?

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Johnny rode his bike 4 blicks down the street to his friend's house once he got to his friend house and realized he could not cone out to play he turned aroubd and went back home.what is displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

According to cell theory; which structures carry out the basic function of living things? a. atoms b. organs c. cells b. nuclei