Imagine a small syntyetic vesicle made from pure phospholipids enclosing an interior lumen containing 1 mM glucose and 1mM sodium chloride. If the vesicle is placed in pure water what will happen first?
A. Na+ diffuses out.
B. cl- diffuses out.
C. H2O diffuses in.
D. Glucose diffuses out.
E. NaCl diffuses out.

What have we learned from fossil evidence about evolution? a) it is an abrupt change. b)the process is observable. c) it takes place during one lifetime only. d)the most complex traits are always selected.

Which of the following is a testable hypotheses?

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.