What is a system?

A. A group of related predictions about the future of one branch of science
B. A series of actions or changes that brings about a desired result
C. A group of related parts that work together to achieve a desired result
D. A question to be considered, solved, or answered

What is the name of the two satelites on mars

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer

Which type of transport is responsible for oxygen entering into blood cells? a. vesicle b.passive c. facilitated d.active b.passive