Members of the Nostoc genus have large numbers of thylakoid membranes, and many have gas vesicles. What statement is also most likely true about Nostoc?

A. They are pathogenic.
B. They form an endosymbiotic mutualism with plant roots.
C. They are photoautotrophs.
D. They are methanogens.
E. They are archaea.


C. They are photoautotrophs.

Biology & Microbiology

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A gene that produces multiple effects is called

a. a multiple allele. b. an autosome. c. an epistatic gene. d. a pleiotropic gene. e. an incompletely dominant gene.

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The risk of ____________________, which occurs when the embryo begins to grow outside the uterus, increases with

the use of IVF. Fill in the blank(s) with the appropriate word(s).

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You should eat a variety of vegetables because 

A. vegetables are an excellent source of protein. B. different vegetables have different vitamins and minerals. C. plants contain toxins and eating only one could be harmful. D. None of the above is correct.

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Koch's postulates can be applied to every infectious disease to identify its causative pathogen

Indicate whether the statement is true or false

Biology & Microbiology