________ can initiate chromosome transfer from one E. coli to another
A) An F+ cell
B) An Hfr cell
C) An F? cell
D) A plasmid
E) A temperate phage
Answer: B
Biology & Microbiology
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A lymph capillary is composed of ____
a. a single layer of endothelial cells surrounded by collagen fibers b. a single layer of endothelial cells surrounded by elastic fibers c. collagen fibers only d. elastic fibers only e. a single layer of endothelial cells only
Biology & Microbiology
Arthropods' have nervous systems composed of a nerve net
Indicate whether the statement is true or false.
Biology & Microbiology
Four of the four answers listed below are types
of complex plant tissue. Select the EXCEPTION.
a. sclerenchyma b. phloem c. xylem d. epidermis e. periderm
Biology & Microbiology
The threshold of human skin temperature at which cool or cold is perceived as pain is
A) 0°F. B) 59°F. C) -5°F. D) 32°F.
Biology & Microbiology