during swallowing, what covers what
What will be an ideal response?
epiglottis covers the glottis
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Vessel elements must be thinner and shorter than tracheids because they lack the structural integrity to support large angiosperm trees
A. true B. false
In bacteria, a unique RNA that binds the A site of the ribosome and directs the addition of approximately 12 amino acids to the nascent peptide when no stop codon is present is called the ________.
Fill in the blank(s) with the appropriate word(s).
__________ muscular dystrophy is most common
among __________ and is caused by a __________. a. Myotonic; children; virus b. Duchenne; adults; mutated gene c. Duchenne; children; mutated gene d. Duchenne; adults; virus e. Myotonic; adults; virus
Dinosaurs (aside from the lineage that produced birds) were extinct by the end of the ________
A) Cretaceous B) Silurian C) Eocene D) Permian