A modified cell membrane that carries out photosynthesis using bacteriorhodopsin in the absence of chlorophyll is called a ________ membrane.

A. colorless
B. purple
C. orange
D. green


Answer: B

Biology & Microbiology

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Gyres are divided into the following types of currents (named below) except

a. Ekman spiral. b. eastern boundary. c. western boundary. d. transverse.

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Franklin worked closely with

a. Wilkins. b. Watson. c. Crick. d. Chargaff. e. none of these.

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A population of Escherichia coli doubles about every ____________ in a laboratory culture.

a. 2 hours b. 20 minutes c. 2 minutes

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Which of the following types of organisms are based on cellular life?

A. bacteria B. yeast C. plants D. animals E. All living organisms are based on cells.

Biology & Microbiology