The diagram below represents the distributions of some molecules inside and outside of a cell over time. Coll
2
O
o
a
O
Time
16
9
A
o
O
Before
After
Key
O Water
Oxygen
Protein
Which factor prevented the protein molecules from moving out of the cell?
O molecular size
Орн
O temperature
-1
O molecular concentration

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.

You are looking through a microscope and see that a teraf has formed. which phase of meiosis is in the cell in?

Explain how natural selection the survival of a species.