Doctors trying to identify the nature of the immune response to a newly identified pathogen note that every time they isolate the antigen that the immune system is responding to, it is bound to the surface of a cell. This means that the component(s) of the immune system involved could be .

Which one of the following statements about muscle is  mostaccurate?   a.  it weighs the same as fat.    b.  its weight in relation to fat depends on a person's fitness level.    c.  it weighs less than fat.    d.  it weighs more than fat

According to myplate guidelines, grains should make up (less than one-fourth, more than one-fourth, about one-fourth) of your plate, fruits should make up (less than one-fourth, more than one-fourth, about one-fourth) of your plate, protein should make up (less than one-fourth, more than one-fourth, about one-fourth) of your plate, and vegetables should make up (less than one-fourth, more than one-fourth, about one-fourth) of your plate.just answered it; about one-fourth, less than one-fourth, about one-fourth, and more than one-fourth

Which of the following is true about vigorous intensity movements. playing single tennis or riding a bike on a hilly surface playing soccer riding bike on a flat surface playing double tennis or playing basketball all of the above