You've made the hypothesis that the steeper the slope, the faster a ball will be rolling when it reaches the bottom.
what should be your independent variable in an experiment testing this hypothesis?
a. how heavy the ball is
b. how steep the slope is
c. how high the ball starts on the slope
d. how fast the ball is rolling at the bottom

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.

Which of these transport mechanisms moves glucose from the blood into a cell? active transport diffusion facilitated diffusion osmosis

The two main stages of cell division are called