Which of the following bacteria is both photosynthetic and Gram-positive?

A. Purple bacteria
B. Cyanobacteria
C. Heliobacteria
D. Green bacteria
E. None of the choices are correct.


Answer: C

Biology & Microbiology

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Four of the five answers listed below are potentially toxic waste products of metabolism. Select the

exception. a. urea b. water c. uric acid d. carbon dioxide e. ammonia

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Based on pollen morphology, it would appear that magnoliids are most closely related to ____

a. eudicots b. star anise group c. monocots d. water lilies e. gymnosperms

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What characteristics separate the Class Mammalia from other animals in the phylum Chordata?

A. bipedal locomotion and an upright stance B. being heterotrophic and multicellular C. developed brain and tool use D. dorsal tubular nerve cords and notochords E. vertebrates with hair and mammary glands

Biology & Microbiology

The viscosity of water is lower than the viscosity of air

Indicate whether the statement is true or false

Biology & Microbiology