Which of the following characteristics are representative of the bacterium Listeria? (Check all that apply.)

A. Listeria has a catalase enzyme.
B. Listeria is a facultative anaerobe.
C. Listeria is nonmotile. 
D. Listeria is a Gram-positive rod.


Answer: D

Biology & Microbiology

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Heterozygotes with the genotype HbA/HbS have ____

a. sickle cell anemia b. malaria c. blood type AS d. Fanconi's anemia e. sickle cell trait

Biology & Microbiology

The point at which the rate that a deleterious allele is being eliminated from a population by natural selection is in equilibrium with the rate at which the deleterious allele is being replaced by a new mutation is termed ________

A) mutation-dependent selection B) frequency-dependent selection C) mutation-dependent equilibrium D) mutation-selection balance

Biology & Microbiology

The process of decomposition releases ________ to bacteria and fungi

A) oxygen B) energy C) glucose D) protein

Biology & Microbiology

All of the following are a form of potential energy that can be used by a cell EXCEPT

A. concentration gradient. B. ATP. C. NADH. D. nitrogen. E. an electrical/ion gradient.

Biology & Microbiology