The exchange surfaces of fish gills are arranged as rows of
A. lamellae.
B. trachea.
C. alveoli.
D. parabronchi.
E. spiracles.
A. lamellae.
Biology & Microbiology
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_________________ is a type of horizontal gene transfer during which genetic information is transferred from one bacterium to another via a pilus
A. Transduction B. Transformation C. Transferation D. Conjugation E. Conduction
Biology & Microbiology
____ are cells of the adaptive immune system that can activate B cells by binding to MHC class II protein–antigen complexes
Fill in the blank with the appropriate word.
Biology & Microbiology
The risk of serious illness from measles is 500 times greater than from vaccination against the disease
Indicate whether this statement is true or false.
Biology & Microbiology
A plant that flowers in the second year of life is a(n)
a. annual. b. biennial. c. perennial. d. annual or biennial.
Biology & Microbiology