Which of the following is the best unit for expressing the size of an average bacterial cell?

A. Nanometer
B. Centimeter
C. Millimeter
D. Micrometer


Answer: D. Micrometer

Biology & Microbiology

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True or false: If speciation is seen primarily as a result of genetic drift, then you would expect to see a bell-shaped distribution of most phenotypic characteristics

A. true B. false

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Amino acids are linked together by ____ bonds

a. phosphodiester b. disulfide c. glycosidic d. hydrogen e. peptide

Biology & Microbiology

Crocodiles are living representatives of ____

a. anapsids b. archosaurs c. lepidosaurs d. synapsids e. dinosaurs

Biology & Microbiology

Answer the question using the accompanying figure. In the diagram of a root tip, the structure labeled "1" is the ____

a. quiescent center b. zone of cell division c. zone of elongation d. root cap e. zone of maturation

Biology & Microbiology