Which of the following is a molecule that stimulates a response in the immune system?
a. MHC class II molecules
b. Immunoglobins
c. Antigens
d. Interferons
c. Antigens
Antigens are molecules that stimulate a response in the immune system and are a key part of the adaptive immune system.
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Isonicotinic acid hydrazide (INH) is an antibiotic used in the treatment of tuberculosis. It affects the synthesis of
A) mycolic acid. B) linoleic acid. C) globular proteins of the cell membrane. D) DNA transcription.
A pollen tube together with its contents of male gametes constitutes the ____
a. male reproductive organ b. endosperm mother cell c. mature male sporophyte d. immature male gametophyte e. mature male gametophyte
Eric was working very hard in the dry, hot boiler room and sweating a lot. Under these conditions, which of the following might Eric be experiencing?
A) He has decreased hydrocortisone. B) He has increased oxytocin. C) He has increased antidiuretic hormone. D) He has decreased thyroxine.
Most of the methane produced by methanogens is oxidized by other types of bacteria before it affects Earth's climate
Indicate whether the statement is true or false