What passes through the nuclear pores?
A) RNA
B) DNA
C) DNA and RNA
D) None of these
A
Biology & Microbiology
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Which mollusc clade includes members that undergo embryonic torsion?
A) chitons B) bivalves C) gastropods D) cephalopods
Biology & Microbiology
The group that probably gave rise to chloroplasts is the
A. cyanobacteria. B. green photosynthetic bacteria. C. purple sulfur bacteria. D. non-sulfur purple bacteria. E. methane bacteria.
Biology & Microbiology
During the first major divergence of life the
atmosphere was a. high oxygen, high carbon dioxide. b. high hydrogen, low oxygen. c. changing from anaerobic to aerobic. d. firmly in the age of aerobes. e. all of these.
Biology & Microbiology
Diffusion moves items with their concentration gradient
a. true b. false
Biology & Microbiology