The ________ is a passageway shared by both food and air
A) trachea
B) pharynx
C) larynx
D) nasal cavity
Answer: B
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The Archaea generally lack which of the following that are normally found in Gram-negative bacteria?
A. a complex peptidoglycan network B. outer membrane C. lipopolysaccharide D. All of the choices are correct.
If cell division is no longer possible, eukaryotes can arrest the cell cycle. During which stage is this decision made?
A. telophase B. G1 C. G2 D. S phase E. prophase
Which feature is found in all cells?
a. nucleus containing DNA b. plasma membrane composed of phospholipids c. flagella d. cell wall composed of cellulose e. nucleoid region that contains DNA
The cap on an mRNA is the site where
a. ribosomes attach at the start of translation b. the start codon is located c. the process of translation ends d. the stop codon is covered until needed e. the mRNA is protected from attack by RNA-digesting enzymes