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
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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
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
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
The viscosity of water is lower than the viscosity of air
Indicate whether the statement is true or false