The first embryonic blood cells come from
a. the amnion.
b. the inner cell mass of the blastocyst.
c. the yolk sac.
d. the chorion.
e. the placenta
C
Biology & Microbiology
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Organisms that require increased pressure for optimum growth are called
A. osmotolerant. B. osmophilic. C. barotolerant. D. barophilic.
Biology & Microbiology
The filamentous growths of moss gametophytes that produce numerous leafy shoots from buds are
called
a. rhizoids. b. thalli. c. sporophytes. d. zygotes. e. protonema.
Biology & Microbiology
Archaea are resistant to damage by harsh conditions because their membrane lipids, unlike those of bacteria and eukaryotes, have
A. isoprene chains B. peptidoglycan C. fatty acid chains D. ether linkages E. ester linkages
Biology & Microbiology
Which bone(s) is (are) part of the pelvic girdle?
A. coxal bones B. scapula C. femur D. clavicle E. talus
Biology & Microbiology