There are two important regions of a lipid that provide the structure of the lipid bilayer. Each lipid molecule contains a hydrophilic region, also called a polar head region, and a hydrophobic, or nonpolar tail region
Explanation:
Inside the air sacs, oxygen moves across paper-thin walls to tiny blood vessels called capillaries and into your blood. A protein called haemoglobin in the red blood cells then carries the oxygen around your body.
Answer: Gram staining is arranged in the following order;
1) Crystal violet
2) iodine
3) Alcohol-acetone
4) safranin
Explanation:
Applying primary stain to a heat fixed smear of a bacterial culture
Then you add iodine which binds the crystal violet and traps it in the cell. After you decolourise with ethanol finally counter shade with safranin
This is what I got hope it helps
