What distinguishes a type A red blood cell from a type B red blood cell

Type A red blood cells have A antigens while type B red blood cells have B antigens.

Explanation: The ABO blood group is classified based on the type of antigens present in the red blood cells. There are basically two types of antigens: type A and type B antigens.

Different blood types are named on the basis of the antigens they have. Type A red blood cells have A antigens, type B red blood cells have B antigens, type AB red blood cells have both A and B antigens while type O red blood cells have no antigens.

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d