Which two molecules—crucial to life on Earth—do cyanobacteria provide?

What will be an ideal response?


Cyanobacteria provide oxygen (via photosynthesis) and nitrogen (via nitrogen fixation from the atmosphere).

Biology & Microbiology

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Cells that crawl rely mainly on ___________________ to facilitate their movement

A. microtubules B. microfilaments C. intermediate filaments

Biology & Microbiology

The feeding habits of lampreys are best

described as a. suspension feeding. b. predatory. c. parasitic. d. scavenging. e. all of these.

Biology & Microbiology

The method used to plot the divergence that arises between sister species as they evolve farther and farther from their common ancestor is termed ________

A) phylogenetically dependent contrasts B) phylogenetically derived contrasts C) divergence contrasts D) phylogenetically independent contrasts

Biology & Microbiology

Water can serve as a human reservoir of Vibrio cholerae.

a. true b. false

Biology & Microbiology