1. Why is the nucleus called the "control center" of the cell?

Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.

What are examples of the plant life and animal life that can be found in each type of terrarium

How do the sperm cells get from the stigma to the ovules?