The Arctic tern makes an annual migration of up to _______

a. 700,000 km
b. 70,000 km
c. 7,000 km
d. 700 km
e. 70 lm


B

Biology & Microbiology

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Where does a dendritic cell present antigen to naive T cells?

a. thymus b. blood c. bone marrow d. lymph node or spleen e. interstitial fluid

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Cotransductant bacteria can occur if

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Acids have a high _____ concentration

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology