Which of the following domains consists of organisms whose cells lack nuclei?

a. Bacteria and Eukarya
b. Archaea and Eukarya
c. Archaea and Bacteria
d. all of the choices


c

Biology & Microbiology

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Molecules that absorb light are called  

A.  enzymes. B.  electron carriers. C.  pigments. D.  photosynthesizers. E.  absorbers.

Biology & Microbiology

Dinoflagellates became photosynthetic via secondary endosymbiosis

Indicate whether the statement is true or false.

Biology & Microbiology

What does Vibrio fischeri use to communicate?

A. Bioluminescence B. Physical contact C. Secreted chemicals D. Electrical impulses

Biology & Microbiology

Which of the following is an example of r-selected organism?

A. Coconut palm B. Flies C. Elephants D. Humans E. Horses

Biology & Microbiology