Which one of the following is a human blood type?
A) E+
B) B-
C) ABO-
D) Rh
E) Rh+
B
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Bioluminescence is a social behavior of bacterial cells that causes luminescence to occur when a dense cell population has been attained
Indicate whether the statement is true or false.
Mycobacterium fortuitum, Mycobacterium chelonae, and Mycobacterium abscessus are:
a. responsible for approximately 90% of clinical mycobacterial disease. b. unable to grow on routine bacteriologic media. c. gram-negative rods resembling Escheri-chia coli on Gram stain. d. slow growers requiring a minimum of 14 days to grow.
In which condition is the mosaic tissue pattern of females easily observed?
a. psoriasis b. incontinentia pigmenti c. ectoderm pigmentation syndrome d. epithelial aggregate syndrome e. albinism
The gametophyte is the dominant stage in the life cycle for which of the following plant groups?
a. club mosses b. whisk ferns c. liverworts d. horsetails e. ferns