Backward chaining starts with a goal then searches back. Forward chaining starts with facts and searches forward.
Answer: Proteins are digested within the stomach and little intestine. Protease enzymes break down proteins into amino acids.
Explanation:
Fluids, water, You loose salt water and electrolights when you perspire, when you drink water it doesn't have salt or electrolights it just has water so it can only replace your water
Answer:
d. polar molecule like glucose
Explanation:
The lipid bilayer of cells are composed basically by lipids and some other proteins. These proteins can act as carries to get in or get out from the cell some substances. Since the lipids are non polar substances, the non polar molecules can travel easily because they are similar substances, in the case of the polar substances they need some carriers and in the case that they don`t enter by a carrier, so the nature of the molecule is not so soluble in the lipid bilayer, in this way will cross at a slowest rate.
Answer:
Explanation: The walls of the alveoli share a membrane with the capillaries. That's how close they are. This lets oxygen and carbon dioxide diffuse, or move freely, between the respiratory system and the bloodstream. Oxygen molecules attach to red blood cells, which travel back to the heart.
