(Question)
You are presented with the question "what is recognized as foreign to the body by the immune system?" and the following answer choices: - h2o - HIV - SNPs - blood - organs - p53 - DDT - HPV Now knowing that antigens are molecules that the immune system recognizes as foreign to the body and another such HPV antigen is the E6 antigen, choose the best answer.
(Answer)
HPV

(Question)
You are presented with the question "What are chlorophyll?" and the following answer choices: - greenstick fractures - In their leaves - white blood cells - color of leaves - Chemical energy - Most plants - photosynthetic - red blood cells Now knowing that chloroplasts contain the green pigment chlorophyll and chloroplasts Chloroplasts contain photosynthetic pigments, choose the best answer.
(Answer)
photosynthetic

(Question)
You are presented with the question "an object will sink in what if it's more dense?" and the following answer choices: - water - gravity - calcite - wood - liquid - rain - outer space - crust Now knowing that if an object in a fluid is more dense than that fluid then that object will sink in that fluid because of gravity and water is usually the best fluid, choose the best answer.
(Answer)
water