Ecdysozoans
A) have a special feeding structure.
B) periodically shed their outer body covering.
C) have trochophore larva.
D) include mollusks, annelids, and flatworms.
E) have a body cavity that forms from the digestive system.
B
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Following implantation, the multiplying cells of the human embryo reorganize to form a gastrula which contains the three primary germ layers
A. true B. false
The net ATP production in glycolysis is only two because
A. two ATPs are used to "activate" glucose, while four ATPs are produced in remaining glycolysis steps. B. two ATPs are used to donate electrons, in order to move NADH into the mitochondria. C. that is all the ATPs "loaded" with phosphates during glycolysis. D. that is the needed number of ATPs to power the reactions of the Krebs cycle. E. None of the answer choices is correct
Which of the following processes is/are part of gene expression?
I. transduction II. transcription III. translation
a. I and II b. I and III c. II and III d. I, II, and III e. III only
In prokaryotes, the RNA polymerase holoenzyme consists of
A. the core polymerase plus two alpha subunits, two beta subunits, and a sigma subunit. B. two alpha subunits, two beta subunits, and two sigma subunits. C. the core polymerase plus a sigma subunit. D. the core polymerase plus two beta subunits. E. the core polymerase plus two alpha subunits.