In the process of splitting water during photosynthesis, the first cyanobacteria released:a

hydrogen gas.
b. oxygen gas.
c. photons of light.
d. heat from longer wavelengths of light.
e. electrons, protons, and neutrons.


B

Biology & Microbiology

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Indicate whether the statement is true or false.

Biology & Microbiology

Which of the following is NOT true about

complementary base pairing in a DNA molecule?

a. covalent bonds connect two complementary bases. b. adenine and thymine are complements. c. guanine and cytosine are complements. d. double-ring nitrogen containing bases connect to single-ring nitrogen containing bases. e. more than one of these is NOT true.

Biology & Microbiology

Smooth muscle has all of the following characteristics except:a

being attached to bones via tendons. b. having sustained contractions. c. requiring less ATP to maintain a high level of force. d. contracting slowly. e. having muscle fibers capable of greater shortening than striated muscle.

Biology & Microbiology

Which character would allow you to identify something as an echinoderm and not a chordate?

A. Dorsal hollow nerve cord B. Radial symmetry C. Pharyngeal gill slits D. Post-anal tail

Biology & Microbiology