Can you explain a little more
Answer:
Ball-and-stick models show the bonds between atoms, but not the relative sizes of atoms. Space-filling models show the relative sizes of atoms, but not the bonds between atoms.
Fermentation and cellular respiration both break down glucose for energy, use pyruvic acid, and produce carbon dioxide, but fermentation does not make as much ATP. it does not require oxygen, and produces lactic acid or ethyl alcohol. Cellular respiration produces a lot of ATP, requires oxygen, and produces water.
Functions of blood:
1. Blood carries oxygen from and carbon dioxide to lungs, nutrients from guts, urea from the liver.
2. It contains anti-bodies, hormones, haemoglobin and many other substances.
3. It distributes heat around the body.