Foreign cells that enter human body have unique cell surface proteins, known as ________, which stimulate body's defense to attack.Group of answer choicesleukocytesantibodiesantigensplatelets

______ attack all kinds of intruders in the body. Group of answer choicesNatural killer cells T-cells Blood  cells None of the above

______ are proteins that bind to foreign proteins which invade the body.Multiple choice question.BuffersHormonesEnzymesAntibodies

Which of the following is an example of an innate defense of the body?Multiple Choicethe immune system recognizing a foreign antigen that has entered the bloodstreamlymphocytes differentiating into B cellsthe inflammatory response occuring when pathogens have entered the bodyT cells targeting a group of cells for destruction due to their antigen

What do we call the proteins on cell surfaces that identify cells as 'self' or 'foreign'?

Which of the following best describes the role of the innate immune system in the human body?Group of answer choicesIt provides the body's first line of defence against foreign particles by recognizing specific pathogens and creating memory cells for future encounters.It primarily functions to produce antibodies that target specific pathogens the body has previously encountered.It consists only of white blood cells, which attack and destroy pathogens within the bloodstream.It recognizes and responds to pathogens non-specifically, providing an immediate response.