Unicellular cyanobacteria are the most abundant phototrophs in the ocean and perform 80% of marine photosynthesis

Indicate whether the statement is true or false.


Answer: TRUE

Biology & Microbiology

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The methanogenic archaeans are ____ that pull

electrons from ____. a. chemoautotrophs; oxygen b. chemoheterotrophs; carbon dioxide c. chemoautotrophs; water d. chemoheterotrophs; methane e. chemoautotrophs; hydrogen gas

Biology & Microbiology

Which of the following is not common to all vertebrates?

a. a forebrain b. a hindbrain c. a convoluted cerebrum d. a dorsal tubular spinal cord e. a midbrain

Biology & Microbiology

What is an exception to the standard biological species concept used to define a species?

A) Species that coevolved cannot be distinguished using this concept. B) Natural interbreeding populations cannot be distinguished using this concept. C) Asexual species cannot be distinguished using this concept. D) Species that do not resemble one another cannot be distinguished using this concept.

Biology & Microbiology

Lysosomes result from the endocytosis of food particles by eukaryotic cells.

Answer the following statement true (T) or false (F)

Biology & Microbiology