Asked by Brooke J.

Proteins found on the outside of cells and viruses are called ____________ , these are used by the body to _______________ pathogens.

antigens; help
antibodies; make
antigens; identify
antibodies; reproduce

Identify the response below that summarizes the correct sequence of events occurring as we breathe in.

Air pressure drops; rib cage moves in and down; diaphragm becomes dome-shaped; air rushes in.
Rib cage moves up and out; diaphragm flattens; chest cavity space increases; air pressure in the lungs drops.
Rib cage moves up and out; air rushes in; air pressure drops; diaphragm flattens.
Rib cage moves down and in; air pressure drops; diaphragm flattens; air rushes in.

Please help I do not know these!
Answered by Brooke J.
Please help ASAP!
Answered by Devron
antigens; identify

I think

Rib cage moves up and out; diaphragm flattens; chest cavity space increases; air pressure in the lungs drops.

But I am not sure!!!!!!!!
Answered by Ken
Yup!
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