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
Biology & Microbiology
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