Plasma membranes are permeable to hydrophilic molecules such as glucose large hydrophilic molecules such as starch nonpolar molecules such as co2 small ions such as na+

The membrane is permeable to the non-polar molecules like CO2.

Sodium also can diffuse through the membrane but it needs channels (or transmembrane transporters). the same thing for the glucose and the starch (these transporters can transport molecules passively or actively).
But the CO2 can pass the plasmic membrane easily without channels because it is partially water-soluble, and it is non-polar, so it has no charges, and can pass through the amphiphile phospholipid molecules.

The answer is magnitude measures the effects of an earthquake on the area , while the intensity measures the strength of an earthquake.

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.