T cell receptors recognize ______, distinguishing cells that belong to the body from infected body cells.
A. antigens
B. MHC markers
C. antigens and MHC markers
D. complement
E. cytokines and complement
Answer: C
Biology & Microbiology
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Something with a pH of 5 would be ________.
A. basic B. neutral C. alkaline D. acidic
Biology & Microbiology
A clinical specimen represents a portion or quantity of human material for testing, examination, or study in order to determine the presence or absence of specific microorganisms.
Answer the following statement true (T) or false (F)
Biology & Microbiology
Dwarf pea plants have deficient levels of the hormone gibberellin
Indicate whether the statement is true or false.
Biology & Microbiology
Based on the phylogeny shown, which species is not a tree but has seeds?
A. Pine B. Rose C. Psaronius D. Oak E. Fern F. Ginkgo
Biology & Microbiology