A _________ is a surgical procedure that allows breathing from an incision in the trachea.
a. true
b. false
Answer: tracheostomy
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Unlike the rigid protein framework in bacteria, a eukaryotic cell's ____ can be remodeled quickly, enabling the cell to change its shape
Fill in the blank with the appropriate word.
What is illustrated by the amino acid sequence of the p53 protein in Figure 23.13?
A. no significant patterns of sequence similarity.
B. greater sequence similarity within closely related groups.
C. greater sequence similarity between distantly related groups.
D. the gene for p53 protein originated in Homo sapiens.
The female gametophyte is the
a. flower. b. ovule. c. embryo sac. d. carpel. e. ovary.
Two large, open spaces called the ________ contain three convoluted shelflike bones that increase the surface area for conditioning inhaled air
Fill in the blank(s) with correct word